/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor(s): Blender Foundation 2009.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/editors/interface/interface_templates.c
 *  \ingroup edinterface
 */


#include <ctype.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>

#include "MEM_guardedalloc.h"

#include "DNA_cachefile_types.h"
#include "DNA_node_types.h"
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "DNA_object_force_types.h"
#include "DNA_brush_types.h"
#include "DNA_texture_types.h"

#include "BLI_utildefines.h"
#include "BLI_alloca.h"
#include "BLI_string.h"
#include "BLI_ghash.h"
#include "BLI_rect.h"
#include "BLI_math.h"
#include "BLI_listbase.h"
#include "BLI_fnmatch.h"
#include "BLI_timecode.h"

#include "BLF_api.h"
#include "BLT_translation.h"

#include "BKE_colorband.h"
#include "BKE_colortools.h"
#include "BKE_context.h"
#include "BKE_global.h"
#include "BKE_idcode.h"
#include "BKE_idprop.h"
#include "BKE_layer.h"
#include "BKE_library.h"
#include "BKE_library_override.h"
#include "BKE_linestyle.h"
#include "BKE_main.h"
#include "BKE_modifier.h"
#include "BKE_object.h"
#include "BKE_packedFile.h"
#include "BKE_particle.h"
#include "BKE_paint.h"
#include "BKE_report.h"
#include "BKE_screen.h"

#include "DEG_depsgraph.h"
#include "DEG_depsgraph_build.h"

#include "ED_screen.h"
#include "ED_object.h"
#include "ED_render.h"
#include "ED_undo.h"

#include "RNA_access.h"

#include "WM_api.h"
#include "WM_types.h"

#include "UI_interface.h"
#include "UI_interface_icons.h"
#include "interface_intern.h"

#include "PIL_time.h"


// #define USE_OP_RESET_BUT  // we may want to make this optional, disable for now.

/* defines for templateID/TemplateSearch */
#define TEMPLATE_SEARCH_TEXTBUT_WIDTH  (UI_UNIT_X * 6)
#define TEMPLATE_SEARCH_TEXTBUT_HEIGHT  UI_UNIT_Y


void UI_template_fix_linking(void)
{
}

typedef struct TemplateID {
	PointerRNA ptr;
	PropertyRNA *prop;

	ListBase *idlb;
	short idcode;
	short filter;
	int prv_rows, prv_cols;
	bool preview;
} TemplateID;

typedef struct SortableIDTabsData {
	TemplateID *template_id;

	wmOperatorType *unlink_ot;
	PointerRNA active_ptr;
} SortableIDTabsData;


/* TODO After file read, we need to be able to identify button groups. That's what should later happen here. */
static bool ui_sortable_id_tabs_button_group_identify(uiButtonGroup *group, void *UNUSED(custom_data))
{
	if (STREQ(group->type->idname, "UI_BGT_sortable_id_tabs")) {
		// XXX
		return true;
	}

	return false;
}

static void ui_sortable_id_tabs_items(void *custom_data, ListBase *r_items)
{
	SortableIDTabsData *data = custom_data;

	for (ID *id = data->template_id->idlb->first; id; id = id->next) {
		UI_button_group_item_add(id, r_items);
	}
}

static void template_ID_set_property_cb(bContext *C, void *arg_template, void *item);

static void ui_sortable_id_tab_item_draw(
        uiBlock *block, void *custom_data, uiButtonGroupItemInfo *item)
{
	SortableIDTabsData *data = custom_data;
	ID *id = item->data;

	uiStyle *style = UI_style_get_dpi();
	const bool is_active = data->active_ptr.data == id;
	const unsigned int but_width = UI_fontstyle_string_width(&style->widgetlabel, id->name + 2) + UI_UNIT_X +
	                               (is_active ? ICON_DEFAULT_WIDTH_SCALE : 0);
//	const int but_align = (region->alignment == RGN_ALIGN_TOP) ? UI_BUT_ALIGN_DOWN : UI_BUT_ALIGN_TOP;


	uiButTab *tab = (uiButTab *)uiDefButR_prop(
	                    block, UI_BTYPE_TAB, 0, "", 0, 0, but_width, UI_UNIT_Y,
	                    &data->template_id->ptr, data->template_id->prop, 0, 0.0f,
	                    sizeof(id->name) - 2, 0.0f, 0.0f, "");
	UI_but_funcN_set(&tab->but, template_ID_set_property_cb, MEM_dupallocN(data->template_id), id);
	UI_but_drawflag_enable(&tab->but, UI_BUT_ALIGN_DOWN); /* TODO fixed alignment - should be based on region alignment */
	UI_but_drag_set_reorder(&tab->but);
	tab->but.custom_data = (void *)id;
	tab->unlink_ot = data->unlink_ot;
	if (is_active) {
		UI_but_flag_enable(&tab->but, UI_BUT_VALUE_CLEAR);
	}
}

uiButtonGroupType *UI_BGT_sortable_id_tabs(void)
{
	uiButtonGroupType *group_type = MEM_callocN(sizeof(uiButtonGroupType), __func__);

	group_type->idname = "UI_BGT_sortable_id_tabs"; // TODO not needed?
	group_type->identify = ui_sortable_id_tabs_button_group_identify;
	group_type->items = ui_sortable_id_tabs_items;
	group_type->item_draw = ui_sortable_id_tab_item_draw;

	return group_type;
}

static void ui_template_sortable_id_tabs(
        ARegion *region, uiBlock *block, TemplateID *template_ui, wmOperatorType *unlink_ot)
{
	uiButtonGroup *group = UI_button_group_ensure(region, "UI_BGT_sortable_id_tabs", template_ui);
	SortableIDTabsData data;

	data.template_id = template_ui;
	data.unlink_ot = unlink_ot;
	data.active_ptr = RNA_property_pointer_get(&template_ui->ptr, template_ui->prop);

	UI_button_group_add_sorted_items(group, block, &data);
}


/**
 * Add a block button for the search menu for templateID and templateSearch.
 */
static void template_add_button_search_menu(
        const bContext *C, uiLayout *layout, uiBlock *block,
        PointerRNA *ptr, PropertyRNA *prop,
        uiBlockCreateFunc block_func, void *block_argN, const char * const tip,
        const bool use_previews, const bool editable)
{
	PointerRNA active_ptr = RNA_property_pointer_get(ptr, prop);
	ID *id = (active_ptr.data && RNA_struct_is_ID(active_ptr.type)) ? active_ptr.data : NULL;
	const ID *idfrom = ptr->id.data;
	const StructRNA *type = active_ptr.type ? active_ptr.type : RNA_property_pointer_type(ptr, prop);
	uiBut *but;

	if (use_previews) {
		ARegion *region = CTX_wm_region(C);
		ScrArea *area = CTX_wm_area(C);
		/* XXX ugly top-bar exception */
		const bool use_big_size = (region->regiontype != RGN_TYPE_HEADER) && (area->spacetype != SPACE_TOPBAR); /* silly check, could be more generic */
		/* Ugly exception for screens here, drawing their preview in icon size looks ugly/useless */
		const bool use_preview_icon = use_big_size || (id && (GS(id->name) != ID_SCR));
		const short width = UI_UNIT_X * (use_big_size ? 6 : 1.6f);
		const short height = UI_UNIT_Y * (use_big_size ? 6 : 1);

		but = uiDefBlockButN(block, block_func, block_argN, "", 0, 0, width, height, tip);
		if (use_preview_icon) {
			int icon = id ? ui_id_icon_get(C, id, use_big_size) : RNA_struct_ui_icon(type);
			ui_def_but_icon(but, icon, UI_HAS_ICON | UI_BUT_ICON_PREVIEW);
		}
		else {
			ui_def_but_icon(but, RNA_struct_ui_icon(type), UI_HAS_ICON);
			UI_but_drawflag_enable(but, UI_BUT_ICON_LEFT);
		}

		if ((idfrom && idfrom->lib) || !editable)
			UI_but_flag_enable(but, UI_BUT_DISABLED);
		if (use_big_size) {
			uiLayoutRow(layout, true);
		}
	}
	else {
		but = uiDefBlockButN(block, block_func, block_argN, "", 0, 0, UI_UNIT_X * 1.6, UI_UNIT_Y, tip);
		ui_def_but_icon(but, RNA_struct_ui_icon(type), UI_HAS_ICON);
		if (id) {
			/* default dragging of icon for id browse buttons */
			UI_but_drag_set_id(but, id);
		}
		UI_but_drawflag_enable(but, UI_BUT_ICON_LEFT);

		if ((idfrom && idfrom->lib) || !editable)
			UI_but_flag_enable(but, UI_BUT_DISABLED);
	}
}

static uiBlock *template_common_search_menu(
        const bContext *C, ARegion *region,
        uiButSearchFunc search_func, void *search_arg,
        uiButHandleFunc handle_func, void *active_item,
        const int preview_rows, const int preview_cols)
{
	static char search[256];
	wmWindow *win = CTX_wm_window(C);
	uiBlock *block;
	uiBut *but;

	/* clear initial search string, then all items show */
	search[0] = 0;

	block = UI_block_begin(C, region, "_popup", UI_EMBOSS);
	UI_block_flag_enable(block, UI_BLOCK_LOOP | UI_BLOCK_SEARCH_MENU);

	/* preview thumbnails */
	if (preview_rows > 0 && preview_cols > 0) {
		const int w = 4 * U.widget_unit * preview_cols;
		const int h = 5 * U.widget_unit * preview_rows;

		/* fake button, it holds space for search items */
		uiDefBut(block, UI_BTYPE_LABEL, 0, "", 10, 26, w, h, NULL, 0, 0, 0, 0, NULL);

		but = uiDefSearchBut(
		        block, search, 0, ICON_VIEWZOOM, sizeof(search), 10, 0, w, UI_UNIT_Y,
		        preview_rows, preview_cols, "");
	}
	/* list view */
	else {
		const int searchbox_width  = UI_searchbox_size_x();
		const int searchbox_height = UI_searchbox_size_y();

		/* fake button, it holds space for search items */
		uiDefBut(
		        block, UI_BTYPE_LABEL, 0, "", 10, 15, searchbox_width, searchbox_height,
		        NULL, 0, 0, 0, 0, NULL);
		but = uiDefSearchBut(
		        block, search, 0, ICON_VIEWZOOM, sizeof(search), 10, 0,
		        searchbox_width, UI_UNIT_Y - 1, 0, 0, "");
	}
	UI_but_func_search_set(
	        but, ui_searchbox_create_generic, search_func,
	        search_arg, handle_func, active_item);


	UI_block_bounds_set_normal(block, 0.3f * U.widget_unit);
	UI_block_direction_set(block, UI_DIR_DOWN);

	/* give search-field focus */
	UI_but_focus_on_enter_event(win, but);
	/* this type of search menu requires undo */
	but->flag |= UI_BUT_UNDO;

	return block;
}

/********************** Header Template *************************/

void uiTemplateHeader(uiLayout *layout, bContext *C)
{
	uiBlock *block;

	block = uiLayoutAbsoluteBlock(layout);
	ED_area_header_switchbutton(C, block, 0);
}

/********************** Search Callbacks *************************/

/* Search browse menu, assign  */
static void template_ID_set_property_cb(bContext *C, void *arg_template, void *item)
{
	TemplateID *template_ui = (TemplateID *)arg_template;

	/* ID */
	if (item) {
		PointerRNA idptr;

		RNA_id_pointer_create(item, &idptr);
		RNA_property_pointer_set(&template_ui->ptr, template_ui->prop, idptr);
		RNA_property_update(C, &template_ui->ptr, template_ui->prop);
	}
}

static bool id_search_add(
        const bContext *C, TemplateID *template_ui,
        const int flag, const char *str, uiSearchItems *items,
        ID *id)
{
	ID *id_from = template_ui->ptr.id.data;

	if (!((flag & PROP_ID_SELF_CHECK) && id == id_from)) {

		/* use filter */
		if (RNA_property_type(template_ui->prop) == PROP_POINTER) {
			PointerRNA ptr;
			RNA_id_pointer_create(id, &ptr);
			if (RNA_property_pointer_poll(&template_ui->ptr, template_ui->prop, &ptr) == 0) {
				return true;
			}
		}

		/* hide dot-datablocks, but only if filter does not force it visible */
		if (U.uiflag & USER_HIDE_DOT) {
			if ((id->name[2] == '.') && (str[0] != '.')) {
				return true;
			}
		}

		if (*str == '\0' || BLI_strcasestr(id->name + 2, str)) {
			/* +1 is needed because BKE_id_ui_prefix used 3 letter prefix
			 * followed by ID_NAME-2 characters from id->name
			 */
			char name_ui[MAX_ID_NAME + 1];
			BKE_id_ui_prefix(name_ui, id);

			int iconid = ui_id_icon_get(C, id, template_ui->preview);

			if (false == UI_search_item_add(items, name_ui, id, iconid)) {
				return false;
			}
		}
	}
	return true;
}

/* ID Search browse menu, do the search */
static void id_search_cb(const bContext *C, void *arg_template, const char *str, uiSearchItems *items)
{
	TemplateID *template_ui = (TemplateID *)arg_template;
	ListBase *lb = template_ui->idlb;
	ID *id;
	int flag = RNA_property_flag(template_ui->prop);

	/* ID listbase */
	for (id = lb->first; id; id = id->next) {
		if (!id_search_add(C, template_ui, flag, str, items, id)) {
			break;
		}
	}
}

/**
 * Use id tags for filtering.
 */
static void id_search_cb_tagged(const bContext *C, void *arg_template, const char *str, uiSearchItems *items)
{
	TemplateID *template_ui = (TemplateID *)arg_template;
	ListBase *lb = template_ui->idlb;
	ID *id;
	int flag = RNA_property_flag(template_ui->prop);

	/* ID listbase */
	for (id = lb->first; id; id = id->next) {
		if (id->tag & LIB_TAG_DOIT) {
			if (!id_search_add(C, template_ui, flag, str, items, id)) {
				break;
			}
			id->tag &= ~LIB_TAG_DOIT;
		}
	}
}

/**
 * A version of 'id_search_cb' that lists scene objects.
 */
static void id_search_cb_objects_from_scene(const bContext *C, void *arg_template, const char *str, uiSearchItems *items)
{
	TemplateID *template_ui = (TemplateID *)arg_template;
	ListBase *lb = template_ui->idlb;
	Scene *scene = NULL;
	ID *id_from = template_ui->ptr.id.data;

	if (id_from && GS(id_from->name) == ID_SCE) {
		scene = (Scene *)id_from;
	}
	else {
		scene = CTX_data_scene(C);
	}

	BKE_main_id_flag_listbase(lb, LIB_TAG_DOIT, false);

	FOREACH_SCENE_OBJECT_BEGIN(scene, ob_iter)
	{
		ob_iter->id.tag |= LIB_TAG_DOIT;
	}
	FOREACH_SCENE_OBJECT_END;
	id_search_cb_tagged(C, arg_template, str, items);
}

/* ID Search browse menu, open */
static uiBlock *id_search_menu(bContext *C, ARegion *ar, void *arg_litem)
{
	static TemplateID template_ui;
	PointerRNA active_item_ptr;
	void (*id_search_cb_p)(const bContext *, void *, const char *, uiSearchItems *) = id_search_cb;

	/* arg_litem is malloced, can be freed by parent button */
	template_ui = *((TemplateID *)arg_litem);
	active_item_ptr = RNA_property_pointer_get(&template_ui.ptr, template_ui.prop);

	if (template_ui.filter) {
		/* Currently only used for objects. */
		if (template_ui.idcode == ID_OB) {
			if (template_ui.filter == UI_TEMPLATE_ID_FILTER_AVAILABLE) {
				id_search_cb_p = id_search_cb_objects_from_scene;
			}
		}
	}

	return template_common_search_menu(
	        C, ar, id_search_cb_p, &template_ui, template_ID_set_property_cb, active_item_ptr.data,
	        template_ui.prv_rows, template_ui.prv_cols);
}

/************************ ID Template ***************************/
/* This is for browsing and editing the ID-blocks used */

/* for new/open operators */
void UI_context_active_but_prop_get_templateID(
	bContext *C,
	PointerRNA *r_ptr, PropertyRNA **r_prop)
{
	TemplateID *template_ui;
	ARegion *ar = CTX_wm_region(C);
	uiBlock *block;
	uiBut *but;

	memset(r_ptr, 0, sizeof(*r_ptr));
	*r_prop = NULL;

	if (!ar)
		return;

	for (block = ar->uiblocks.first; block; block = block->next) {
		for (but = block->buttons.first; but; but = but->next) {
			/* find the button before the active one */
			if ((but->flag & (UI_BUT_LAST_ACTIVE | UI_ACTIVE))) {
				if (but->func_argN) {
					template_ui = but->func_argN;
					*r_ptr = template_ui->ptr;
					*r_prop = template_ui->prop;
					return;
				}
			}
		}
	}
}


static void template_id_cb(bContext *C, void *arg_litem, void *arg_event)
{
	TemplateID *template_ui = (TemplateID *)arg_litem;
	PointerRNA idptr = RNA_property_pointer_get(&template_ui->ptr, template_ui->prop);
	ID *id = idptr.data;
	int event = GET_INT_FROM_POINTER(arg_event);

	switch (event) {
		case UI_ID_BROWSE:
		case UI_ID_PIN:
			RNA_warning("warning, id event %d shouldnt come here", event);
			break;
		case UI_ID_OPEN:
		case UI_ID_ADD_NEW:
			/* these call UI_context_active_but_prop_get_templateID */
			break;
		case UI_ID_DELETE:
			memset(&idptr, 0, sizeof(idptr));
			RNA_property_pointer_set(&template_ui->ptr, template_ui->prop, idptr);
			RNA_property_update(C, &template_ui->ptr, template_ui->prop);

			if (id && CTX_wm_window(C)->eventstate->shift) {
				/* only way to force-remove data (on save) */
				id_fake_user_clear(id);
				id->us = 0;
			}

			break;
		case UI_ID_FAKE_USER:
			if (id) {
				if (id->flag & LIB_FAKEUSER) id_us_plus(id);
				else id_us_min(id);
			}
			else {
				return;
			}
			break;
		case UI_ID_LOCAL:
			if (id) {
				Main *bmain = CTX_data_main(C);
				if (CTX_wm_window(C)->eventstate->shift) {
					ID *override_id = BKE_override_static_create_from_id(bmain, id);
					if (override_id != NULL) {
						BKE_main_id_clear_newpoins(bmain);

						/* Assign new pointer, takes care of updates/notifiers */
						RNA_id_pointer_create(override_id, &idptr);
					}
				}
				else {
					if (id_make_local(bmain, id, false, false)) {
						BKE_main_id_clear_newpoins(bmain);

						/* reassign to get get proper updates/notifiers */
						idptr = RNA_property_pointer_get(&template_ui->ptr, template_ui->prop);
					}
				}
				RNA_property_pointer_set(&template_ui->ptr, template_ui->prop, idptr);
				RNA_property_update(C, &template_ui->ptr, template_ui->prop);
			}
			break;
		case UI_ID_OVERRIDE:
			if (id && id->override_static) {
				BKE_override_static_free(&id->override_static);
				/* reassign to get get proper updates/notifiers */
				idptr = RNA_property_pointer_get(&template_ui->ptr, template_ui->prop);
				RNA_property_pointer_set(&template_ui->ptr, template_ui->prop, idptr);
				RNA_property_update(C, &template_ui->ptr, template_ui->prop);
			}
			break;
		case UI_ID_ALONE:
			if (id) {
				const bool do_scene_obj = (
				        (GS(id->name) == ID_OB) &&
				        (template_ui->ptr.type == &RNA_SceneObjects));

				/* make copy */
				if (do_scene_obj) {
					Main *bmain = CTX_data_main(C);
					Scene *scene = CTX_data_scene(C);
					ED_object_single_user(bmain, scene, (struct Object *)id);
					DEG_id_tag_update(&scene->id, DEG_TAG_SELECT_UPDATE);
					WM_event_add_notifier(C, NC_SCENE | ND_OB_ACTIVE, scene);
					DEG_relations_tag_update(bmain);
				}
				else {
					if (id) {
						Main *bmain = CTX_data_main(C);
						id_single_user(C, id, &template_ui->ptr, template_ui->prop);
						DEG_relations_tag_update(bmain);
					}
				}
			}
			break;
#if 0
		case UI_ID_AUTO_NAME:
			break;
#endif
	}
}

static const char *template_id_browse_tip(const StructRNA *type)
{
	if (type) {
		switch (RNA_type_to_ID_code(type)) {
			case ID_SCE: return N_("Browse Scene to be linked");
			case ID_OB:  return N_("Browse Object to be linked");
			case ID_ME:  return N_("Browse Mesh Data to be linked");
			case ID_CU:  return N_("Browse Curve Data to be linked");
			case ID_MB:  return N_("Browse Metaball Data to be linked");
			case ID_MA:  return N_("Browse Material to be linked");
			case ID_TE:  return N_("Browse Texture to be linked");
			case ID_IM:  return N_("Browse Image to be linked");
			case ID_LS:  return N_("Browse Line Style Data to be linked");
			case ID_LT:  return N_("Browse Lattice Data to be linked");
			case ID_LA:  return N_("Browse Lamp Data to be linked");
			case ID_CA:  return N_("Browse Camera Data to be linked");
			case ID_WO:  return N_("Browse World Settings to be linked");
			case ID_SCR: return N_("Choose Screen layout");
			case ID_TXT: return N_("Browse Text to be linked");
			case ID_SPK: return N_("Browse Speaker Data to be linked");
			case ID_SO:  return N_("Browse Sound to be linked");
			case ID_AR:  return N_("Browse Armature data to be linked");
			case ID_AC:  return N_("Browse Action to be linked");
			case ID_NT:  return N_("Browse Node Tree to be linked");
			case ID_BR:  return N_("Browse Brush to be linked");
			case ID_PA:  return N_("Browse Particle Settings to be linked");
			case ID_GD:  return N_("Browse Grease Pencil Data to be linked");
			case ID_MC:  return N_("Browse Movie Clip to be linked");
			case ID_MSK: return N_("Browse Mask to be linked");
			case ID_PAL: return N_("Browse Palette Data to be linked");
			case ID_PC:  return N_("Browse Paint Curve Data to be linked");
			case ID_CF:  return N_("Browse Cache Files to be linked");
			case ID_WS:  return N_("Browse Workspace to be linked");
			case ID_LP:  return N_("Browse LightProbe to be linked");
		}
	}
	return N_("Browse ID data to be linked");
}

/**
 * \return a type-based i18n context, needed e.g. by "New" button.
 * In most languages, this adjective takes different form based on gender of type name...
 */
#ifdef WITH_INTERNATIONAL
static const char *template_id_context(StructRNA *type)
{
	if (type) {
		return BKE_idcode_to_translation_context(RNA_type_to_ID_code(type));
	}
	return BLT_I18NCONTEXT_DEFAULT;
}
#endif

static uiBut *template_id_def_new_but(
        uiBlock *block, const ID *id, const TemplateID *template_ui, StructRNA *type,
        const char * const newop, const bool editable, const bool id_open, const bool use_tab_but,
        int but_height)
{
	ID *idfrom = template_ui->ptr.id.data;
	uiBut *but;
	const int w = id ? UI_UNIT_X : id_open ? UI_UNIT_X * 3 : UI_UNIT_X * 6;
	const int but_type = use_tab_but ? UI_BTYPE_TAB : UI_BTYPE_BUT;

	/* i18n markup, does nothing! */
	BLT_I18N_MSGID_MULTI_CTXT(
	        "New",
	        BLT_I18NCONTEXT_DEFAULT,
	        BLT_I18NCONTEXT_ID_SCENE,
	        BLT_I18NCONTEXT_ID_OBJECT,
	        BLT_I18NCONTEXT_ID_MESH,
	        BLT_I18NCONTEXT_ID_CURVE,
	        BLT_I18NCONTEXT_ID_METABALL,
	        BLT_I18NCONTEXT_ID_MATERIAL,
	        BLT_I18NCONTEXT_ID_TEXTURE,
	        BLT_I18NCONTEXT_ID_IMAGE,
	        BLT_I18NCONTEXT_ID_LATTICE,
	        BLT_I18NCONTEXT_ID_LAMP,
	        BLT_I18NCONTEXT_ID_CAMERA,
	        BLT_I18NCONTEXT_ID_WORLD,
	        BLT_I18NCONTEXT_ID_SCREEN,
	        BLT_I18NCONTEXT_ID_TEXT,
	);
	BLT_I18N_MSGID_MULTI_CTXT(
	        "New",
	        BLT_I18NCONTEXT_ID_SPEAKER,
	        BLT_I18NCONTEXT_ID_SOUND,
	        BLT_I18NCONTEXT_ID_ARMATURE,
	        BLT_I18NCONTEXT_ID_ACTION,
	        BLT_I18NCONTEXT_ID_NODETREE,
	        BLT_I18NCONTEXT_ID_BRUSH,
	        BLT_I18NCONTEXT_ID_PARTICLESETTINGS,
	        BLT_I18NCONTEXT_ID_GPENCIL,
	        BLT_I18NCONTEXT_ID_FREESTYLELINESTYLE,
	        BLT_I18NCONTEXT_ID_WORKSPACE,
	        BLT_I18NCONTEXT_ID_LIGHTPROBE,
	);

	if (newop) {
		but = uiDefIconTextButO(
		        block, but_type, newop, WM_OP_INVOKE_DEFAULT, ICON_ZOOMIN,
		        (id) ? "" : CTX_IFACE_(template_id_context(type), "New"), 0, 0, w, but_height, NULL);
		UI_but_funcN_set(but, template_id_cb, MEM_dupallocN(template_ui), SET_INT_IN_POINTER(UI_ID_ADD_NEW));
	}
	else {
		but = uiDefIconTextBut(
		        block, but_type, 0, ICON_ZOOMIN, (id) ? "" : CTX_IFACE_(template_id_context(type), "New"),
		        0, 0, w, but_height, NULL, 0, 0, 0, 0, NULL);
		UI_but_funcN_set(but, template_id_cb, MEM_dupallocN(template_ui), SET_INT_IN_POINTER(UI_ID_ADD_NEW));
	}

	if ((idfrom && idfrom->lib) || !editable) {
		UI_but_flag_enable(but, UI_BUT_DISABLED);
	}

#ifndef WITH_INTERNATIONAL
	UNUSED_VARS(type);
#endif

	return but;
}

static void template_ID(
        bContext *C, uiLayout *layout, TemplateID *template_ui, StructRNA *type, int flag,
        const char *newop, const char *openop, const char *unlinkop)
{
	uiBut *but;
	uiBlock *block;
	PointerRNA idptr;
	// ListBase *lb; // UNUSED
	ID *id, *idfrom;
	const bool editable = RNA_property_editable(&template_ui->ptr, template_ui->prop);
	const bool use_previews = template_ui->preview = (flag & UI_ID_PREVIEWS) != 0;

	idptr = RNA_property_pointer_get(&template_ui->ptr, template_ui->prop);
	id = idptr.data;
	idfrom = template_ui->ptr.id.data;
	// lb = template_ui->idlb;

	block = uiLayoutGetBlock(layout);
	UI_block_align_begin(block);

	if (idptr.type)
		type = idptr.type;

	if (flag & UI_ID_BROWSE) {
		template_add_button_search_menu(
		        C, layout, block, &template_ui->ptr, template_ui->prop,
		        id_search_menu, MEM_dupallocN(template_ui), TIP_(template_id_browse_tip(type)),
		        use_previews, editable);
	}

	/* text button with name */
	if (id) {
		char name[UI_MAX_NAME_STR];
		const bool user_alert = (id->us <= 0);

		//text_idbutton(id, name);
		name[0] = '\0';
		but = uiDefButR(
		        block, UI_BTYPE_TEXT, 0, name, 0, 0, TEMPLATE_SEARCH_TEXTBUT_WIDTH, TEMPLATE_SEARCH_TEXTBUT_HEIGHT,
		        &idptr, "name", -1, 0, 0, -1, -1, RNA_struct_ui_description(type));
		UI_but_funcN_set(but, template_id_cb, MEM_dupallocN(template_ui), SET_INT_IN_POINTER(UI_ID_RENAME));
		if (user_alert) UI_but_flag_enable(but, UI_BUT_REDALERT);

		if (id->lib) {
			if (id->tag & LIB_TAG_INDIRECT) {
				but = uiDefIconBut(
				        block, UI_BTYPE_BUT, 0, ICON_LIBRARY_DATA_INDIRECT, 0, 0, UI_UNIT_X, UI_UNIT_Y,
				        NULL, 0, 0, 0, 0, TIP_("Indirect library data-block, cannot change"));
				UI_but_flag_enable(but, UI_BUT_DISABLED);
			}
			else {
				const bool disabled = (
				        !id_make_local(CTX_data_main(C), id, true /* test */, false) ||
				        (idfrom && idfrom->lib));
				but = uiDefIconBut(
				        block, UI_BTYPE_BUT, 0, ICON_LIBRARY_DATA_DIRECT, 0, 0, UI_UNIT_X, UI_UNIT_Y,
				        NULL, 0, 0, 0, 0,
				        TIP_("Direct linked library data-block, click to make local, "
				             "Shift + Click to create a static override"));
				if (disabled) {
					UI_but_flag_enable(but, UI_BUT_DISABLED);
				}
				else {
					UI_but_funcN_set(but, template_id_cb, MEM_dupallocN(template_ui), SET_INT_IN_POINTER(UI_ID_LOCAL));
				}
			}
		}
		else if (ID_IS_STATIC_OVERRIDE(id)) {
			but = uiDefIconBut(
			        block, UI_BTYPE_BUT, 0, ICON_LIBRARY_DATA_OVERRIDE, 0, 0, UI_UNIT_X, UI_UNIT_Y,
			        NULL, 0, 0, 0, 0,
			        TIP_("Static override of linked library data-block, click to make fully local"));
			UI_but_funcN_set(but, template_id_cb, MEM_dupallocN(template_ui), SET_INT_IN_POINTER(UI_ID_OVERRIDE));
		}

		if (id->us > 1) {
			char numstr[32];
			short numstr_len;

			numstr_len = BLI_snprintf(numstr, sizeof(numstr), "%d", id->us);

			but = uiDefBut(
			        block, UI_BTYPE_BUT, 0, numstr, 0, 0,
			        numstr_len * 0.2f * UI_UNIT_X + UI_UNIT_X, UI_UNIT_Y, NULL, 0, 0, 0, 0,
			        TIP_("Display number of users of this data (click to make a single-user copy)"));
			but->flag |= UI_BUT_UNDO;

			UI_but_funcN_set(but, template_id_cb, MEM_dupallocN(template_ui), SET_INT_IN_POINTER(UI_ID_ALONE));
			if (/* test only */
			    (id_copy(CTX_data_main(C), id, NULL, true) == false) ||
			    (idfrom && idfrom->lib) ||
			    (!editable) ||
			    /* object in editmode - don't change data */
			    (idfrom && GS(idfrom->name) == ID_OB && (((Object *)idfrom)->mode & OB_MODE_EDIT)))
			{
				UI_but_flag_enable(but, UI_BUT_DISABLED);
			}
		}

		if (user_alert) UI_but_flag_enable(but, UI_BUT_REDALERT);

		if (id->lib == NULL && !(ELEM(GS(id->name), ID_GR, ID_SCE, ID_SCR, ID_TXT, ID_OB, ID_WS))) {
			uiDefButR(block, UI_BTYPE_TOGGLE, 0, "F", 0, 0, UI_UNIT_X, UI_UNIT_Y, &idptr, "use_fake_user", -1, 0, 0, -1, -1, NULL);
		}
	}

	if (flag & UI_ID_ADD_NEW) {
		template_id_def_new_but(block, id, template_ui, type, newop, editable, flag & UI_ID_OPEN, false, UI_UNIT_X);
	}

	/* Due to space limit in UI - skip the "open" icon for packed data, and allow to unpack.
	 * Only for images, sound and fonts */
	if (id && BKE_pack_check(id)) {
		but = uiDefIconButO(
		        block, UI_BTYPE_BUT, "FILE_OT_unpack_item", WM_OP_INVOKE_REGION_WIN, ICON_PACKAGE, 0, 0,
		        UI_UNIT_X, UI_UNIT_Y, TIP_("Packed File, click to unpack"));
		UI_but_operator_ptr_get(but);

		RNA_string_set(but->opptr, "id_name", id->name + 2);
		RNA_int_set(but->opptr, "id_type", GS(id->name));

	}
	else if (flag & UI_ID_OPEN) {
		int w = id ? UI_UNIT_X : (flag & UI_ID_ADD_NEW) ? UI_UNIT_X * 3 : UI_UNIT_X * 6;

		if (openop) {
			but = uiDefIconTextButO(
			        block, UI_BTYPE_BUT, openop, WM_OP_INVOKE_DEFAULT, ICON_FILESEL, (id) ? "" : IFACE_("Open"),
			        0, 0, w, UI_UNIT_Y, NULL);
			UI_but_funcN_set(but, template_id_cb, MEM_dupallocN(template_ui), SET_INT_IN_POINTER(UI_ID_OPEN));
		}
		else {
			but = uiDefIconTextBut(
			        block, UI_BTYPE_BUT, 0, ICON_FILESEL, (id) ? "" : IFACE_("Open"), 0, 0, w, UI_UNIT_Y,
			        NULL, 0, 0, 0, 0, NULL);
			UI_but_funcN_set(but, template_id_cb, MEM_dupallocN(template_ui), SET_INT_IN_POINTER(UI_ID_OPEN));
		}

		if ((idfrom && idfrom->lib) || !editable)
			UI_but_flag_enable(but, UI_BUT_DISABLED);
	}

	/* delete button */
	/* don't use RNA_property_is_unlink here */
	if (id && (flag & UI_ID_DELETE)) {
		/* allow unlink if 'unlinkop' is passed, even when 'PROP_NEVER_UNLINK' is set */
		but = NULL;

		if (unlinkop) {
			but = uiDefIconButO(block, UI_BTYPE_BUT, unlinkop, WM_OP_INVOKE_REGION_WIN, ICON_X, 0, 0, UI_UNIT_X, UI_UNIT_Y, NULL);
			/* so we can access the template from operators, font unlinking needs this */
			UI_but_funcN_set(but, NULL, MEM_dupallocN(template_ui), NULL);
		}
		else {
			if ((RNA_property_flag(template_ui->prop) & PROP_NEVER_UNLINK) == 0) {
				but = uiDefIconBut(
				        block, UI_BTYPE_BUT, 0, ICON_X, 0, 0, UI_UNIT_X, UI_UNIT_Y, NULL, 0, 0, 0, 0,
				        TIP_("Unlink data-block "
				             "(Shift + Click to set users to zero, data will then not be saved)"));
				UI_but_funcN_set(but, template_id_cb, MEM_dupallocN(template_ui), SET_INT_IN_POINTER(UI_ID_DELETE));

				if (RNA_property_flag(template_ui->prop) & PROP_NEVER_NULL) {
					UI_but_flag_enable(but, UI_BUT_DISABLED);
				}
			}
		}

		if (but) {
			if ((idfrom && idfrom->lib) || !editable) {
				UI_but_flag_enable(but, UI_BUT_DISABLED);
			}
		}
	}

	if (template_ui->idcode == ID_TE) {
		uiTemplateTextureShow(layout, C, &template_ui->ptr, template_ui->prop);
	}
	UI_block_align_end(block);
}

static void template_ID_tabs(
        bContext *C, uiLayout *layout, TemplateID *template, StructRNA *type, int flag,
        const char *newop, const char *UNUSED(openop), const char *unlinkop)
{
	ARegion *region = CTX_wm_region(C);
	const PointerRNA active_ptr = RNA_property_pointer_get(&template->ptr, template->prop);
	const int but_align = (region->alignment == RGN_ALIGN_TOP) ? UI_BUT_ALIGN_DOWN : UI_BUT_ALIGN_TOP;
	wmOperatorType *unlink_ot = WM_operatortype_find(unlinkop, false);
	const int but_height = UI_UNIT_Y * 1.1;

	uiBlock *block = uiLayoutGetBlock(layout);

	ui_template_sortable_id_tabs(region, block, template, unlink_ot);

	if (flag & UI_ID_ADD_NEW) {
		const bool editable = RNA_property_editable(&template->ptr, template->prop);
		uiBut *but;

		if (active_ptr.type) {
			type = active_ptr.type;
		}

		but = template_id_def_new_but(block, active_ptr.data, template, type, newop, editable, flag & UI_ID_OPEN, true, but_height);
		UI_but_drawflag_enable(but, but_align);
	}
}

static void ui_template_id(
        uiLayout *layout, bContext *C,
        PointerRNA *ptr, const char *propname,
        const char *newop, const char *openop, const char *unlinkop,
        int flag, int prv_rows, int prv_cols, int filter, bool use_tabs)
{
	TemplateID *template_ui;
	PropertyRNA *prop;
	StructRNA *type;
	short idcode;

	prop = RNA_struct_find_property(ptr, propname);

	if (!prop || RNA_property_type(prop) != PROP_POINTER) {
		RNA_warning("pointer property not found: %s.%s", RNA_struct_identifier(ptr->type), propname);
		return;
	}

	template_ui = MEM_callocN(sizeof(TemplateID), "TemplateID");
	template_ui->ptr = *ptr;
	template_ui->prop = prop;
	template_ui->prv_rows = prv_rows;
	template_ui->prv_cols = prv_cols;

	if ((flag & UI_ID_PIN) == 0) {
		template_ui->filter = filter;
	}
	else {
		template_ui->filter = 0;
	}

	if (newop)
		flag |= UI_ID_ADD_NEW;
	if (openop)
		flag |= UI_ID_OPEN;

	type = RNA_property_pointer_type(ptr, prop);
	idcode = RNA_type_to_ID_code(type);
	template_ui->idcode = idcode;
	template_ui->idlb = which_libbase(CTX_data_main(C), idcode);

	/* create UI elements for this template
	 *	- template_ID makes a copy of the template data and assigns it to the relevant buttons
	 */
	if (template_ui->idlb) {
		if (use_tabs) {
			uiLayoutRow(layout, true);
			template_ID_tabs(C, layout, template_ui, type, flag, newop, openop, unlinkop);
		}
		else {
			uiLayoutRow(layout, true);
			template_ID(C, layout, template_ui, type, flag, newop, openop, unlinkop);
		}
	}

	MEM_freeN(template_ui);
}

void uiTemplateID(
        uiLayout *layout, bContext *C, PointerRNA *ptr, const char *propname, const char *newop,
        const char *openop, const char *unlinkop, int filter)
{
	ui_template_id(
	        layout, C, ptr, propname,
	        newop, openop, unlinkop,
	        UI_ID_BROWSE | UI_ID_RENAME | UI_ID_DELETE,
	        0, 0, filter, false);
}

void uiTemplateIDBrowse(
        uiLayout *layout, bContext *C, PointerRNA *ptr, const char *propname, const char *newop,
        const char *openop, const char *unlinkop, int filter)
{
	ui_template_id(
	        layout, C, ptr, propname,
	        newop, openop, unlinkop,
	        UI_ID_BROWSE | UI_ID_RENAME,
	        0, 0, filter, false);
}

void uiTemplateIDPreview(
        uiLayout *layout, bContext *C, PointerRNA *ptr, const char *propname, const char *newop,
        const char *openop, const char *unlinkop, int rows, int cols, int filter)
{
	ui_template_id(
	        layout, C, ptr, propname,
	        newop, openop, unlinkop,
	        UI_ID_BROWSE | UI_ID_RENAME | UI_ID_DELETE | UI_ID_PREVIEWS,
	        rows, cols, filter, false);
}

/**
 * Version of #uiTemplateID using tabs.
 */
void uiTemplateIDTabs(
        uiLayout *layout, bContext *C,
        PointerRNA *ptr, const char *propname,
        const char *newop, const char *openop, const char *unlinkop,
        int filter)
{
	ui_template_id(
	        layout, C, ptr, propname,
	        newop, openop, unlinkop,
	        UI_ID_BROWSE | UI_ID_RENAME | UI_ID_DELETE,
	        0, 0, filter, true);
}

/************************ ID Chooser Template ***************************/

/**
 * This is for selecting the type of ID-block to use, and then from the relevant type choosing the block to use
 *
 * - propname: property identifier for property that ID-pointer gets stored to
 * - proptypename: property identifier for property used to determine the type of ID-pointer that can be used
 */
void uiTemplateAnyID(
        uiLayout *layout, PointerRNA *ptr, const char *propname, const char *proptypename,
        const char *text)
{
	PropertyRNA *propID, *propType;
	uiLayout *split, *row, *sub;

	/* get properties... */
	propID = RNA_struct_find_property(ptr, propname);
	propType = RNA_struct_find_property(ptr, proptypename);

	if (!propID || RNA_property_type(propID) != PROP_POINTER) {
		RNA_warning("pointer property not found: %s.%s", RNA_struct_identifier(ptr->type), propname);
		return;
	}
	if (!propType || RNA_property_type(propType) != PROP_ENUM) {
		RNA_warning("pointer-type property not found: %s.%s", RNA_struct_identifier(ptr->type), proptypename);
		return;
	}

	/* Start drawing UI Elements using standard defines */
	split = uiLayoutSplit(layout, 0.33f, false);  /* NOTE: split amount here needs to be synced with normal labels */

	/* FIRST PART ................................................ */
	row = uiLayoutRow(split, false);

	/* Label - either use the provided text, or will become "ID-Block:" */
	if (text) {
		if (text[0])
			uiItemL(row, text, ICON_NONE);
	}
	else {
		uiItemL(row, IFACE_("ID-Block:"), ICON_NONE);
	}

	/* SECOND PART ................................................ */
	row = uiLayoutRow(split, true);

	/* ID-Type Selector - just have a menu of icons */
	sub = uiLayoutRow(row, true);                     /* HACK: special group just for the enum, otherwise we */
	uiLayoutSetAlignment(sub, UI_LAYOUT_ALIGN_LEFT);  /*       we get ugly layout with text included too...  */

	uiItemFullR(sub, ptr, propType, 0, 0, UI_ITEM_R_ICON_ONLY, "", ICON_NONE);

	/* ID-Block Selector - just use pointer widget... */
	sub = uiLayoutRow(row, true);                       /* HACK: special group to counteract the effects of the previous */
	uiLayoutSetAlignment(sub, UI_LAYOUT_ALIGN_EXPAND);  /*       enum, which now pushes everything too far right         */

	uiItemFullR(sub, ptr, propID, 0, 0, 0, "", ICON_NONE);
}

/********************* Search Template ********************/

typedef struct TemplateSearch {
	uiRNACollectionSearch search_data;

	bool use_previews;
	int preview_rows, preview_cols;
} TemplateSearch;

static void template_search_handle_cb(bContext *C, void *arg_template, void *item)
{
	TemplateSearch *template_search = arg_template;
	uiRNACollectionSearch *coll_search = &template_search->search_data;
	StructRNA *type = RNA_property_pointer_type(&coll_search->target_ptr, coll_search->target_prop);
	PointerRNA item_ptr;

	RNA_pointer_create(NULL, type, item, &item_ptr);
	RNA_property_pointer_set(&coll_search->target_ptr, coll_search->target_prop, item_ptr);
	RNA_property_update(C, &coll_search->target_ptr, coll_search->target_prop);
}

static uiBlock *template_search_menu(bContext *C, ARegion *region, void *arg_template)
{
	static TemplateSearch template_search;
	PointerRNA active_ptr;

	/* arg_template is malloced, can be freed by parent button */
	template_search = *((TemplateSearch *)arg_template);
	active_ptr = RNA_property_pointer_get(
	        &template_search.search_data.target_ptr,
	        template_search.search_data.target_prop);

	return template_common_search_menu(
	        C, region, ui_rna_collection_search_cb, &template_search,
	        template_search_handle_cb, active_ptr.data,
	        template_search.preview_rows, template_search.preview_cols);
}

static void template_search_add_button_searchmenu(
        const bContext *C, uiLayout *layout, uiBlock *block,
        TemplateSearch *template_search, const bool editable)
{
	const char *ui_description = RNA_property_ui_description(template_search->search_data.target_prop);

	template_add_button_search_menu(
	        C, layout, block,
	        &template_search->search_data.target_ptr, template_search->search_data.target_prop,
	        template_search_menu, MEM_dupallocN(template_search), ui_description,
	        template_search->use_previews, editable);
}

static void template_search_add_button_name(
        uiBlock *block, PointerRNA *active_ptr, const StructRNA *type)
{
	uiDefAutoButR(
	        block, active_ptr, RNA_struct_name_property(type), 0, "", ICON_NONE,
	        0, 0, TEMPLATE_SEARCH_TEXTBUT_WIDTH, TEMPLATE_SEARCH_TEXTBUT_HEIGHT);
}

static void template_search_add_button_operator(
        uiBlock *block, const char * const operator_name,
        const int opcontext, const int icon, const bool editable)
{
	if (!operator_name) {
		return;
	}

	uiBut *but = uiDefIconButO(
	        block, UI_BTYPE_BUT, operator_name, opcontext, icon,
	        0, 0, UI_UNIT_X, UI_UNIT_Y, NULL);

	if (!editable) {
		UI_but_drawflag_enable(but, UI_BUT_DISABLED);
	}
}

static void template_search_buttons(
        const bContext *C, uiLayout *layout, TemplateSearch *template_search,
        const char *newop, const char *unlinkop)
{
	uiBlock *block = uiLayoutGetBlock(layout);
	uiRNACollectionSearch *search_data = &template_search->search_data;
	StructRNA *type = RNA_property_pointer_type(&search_data->target_ptr, search_data->target_prop);
	const bool editable = RNA_property_editable(&search_data->target_ptr, search_data->target_prop);
	PointerRNA active_ptr = RNA_property_pointer_get(&search_data->target_ptr, search_data->target_prop);

	if (active_ptr.type) {
		/* can only get correct type when there is an active item */
		type = active_ptr.type;
	}

	uiLayoutRow(layout, true);
	UI_block_align_begin(block);

	template_search_add_button_searchmenu(C, layout, block, template_search, editable);
	template_search_add_button_name(block, &active_ptr, type);
	template_search_add_button_operator(block, newop, WM_OP_INVOKE_DEFAULT, ICON_ZOOMIN, editable);
	template_search_add_button_operator(block, unlinkop, WM_OP_INVOKE_REGION_WIN, ICON_X, editable);

	UI_block_align_end(block);
}

static PropertyRNA *template_search_get_searchprop(
        PointerRNA *targetptr, PropertyRNA *targetprop,
        PointerRNA *searchptr, const char * const searchpropname)
{
	PropertyRNA *searchprop;

	if (searchptr && !searchptr->data) {
		searchptr = NULL;
	}

	if (!searchptr && !searchpropname) {
		/* both NULL means we don't use a custom rna collection to search in */
	}
	else if (!searchptr && searchpropname) {
		RNA_warning("searchpropname defined (%s) but searchptr is missing", searchpropname);
	}
	else if (searchptr && !searchpropname) {
		RNA_warning("searchptr defined (%s) but searchpropname is missing", RNA_struct_identifier(searchptr->type));
	}
	else if (!(searchprop = RNA_struct_find_property(searchptr, searchpropname))) {
		RNA_warning("search collection property not found: %s.%s",
		            RNA_struct_identifier(searchptr->type), searchpropname);
	}
	else if (RNA_property_type(searchprop) != PROP_COLLECTION) {
		RNA_warning("search collection property is not a collection type: %s.%s",
		            RNA_struct_identifier(searchptr->type), searchpropname);
	}
	/* check if searchprop has same type as targetprop */
	else if (RNA_property_pointer_type(searchptr, searchprop) != RNA_property_pointer_type(targetptr, targetprop)) {
		RNA_warning("search collection items from %s.%s are not of type %s",
		            RNA_struct_identifier(searchptr->type), searchpropname,
		            RNA_struct_identifier(RNA_property_pointer_type(targetptr, targetprop)));
	}
	else {
		return searchprop;
	}

	return NULL;
}

static TemplateSearch *template_search_setup(
        PointerRNA *ptr, const char * const propname,
        PointerRNA *searchptr, const char * const searchpropname)
{
	TemplateSearch *template_search;
	PropertyRNA *prop, *searchprop;

	prop = RNA_struct_find_property(ptr, propname);

	if (!prop || RNA_property_type(prop) != PROP_POINTER) {
		RNA_warning("pointer property not found: %s.%s", RNA_struct_identifier(ptr->type), propname);
		return NULL;
	}
	searchprop = template_search_get_searchprop(ptr, prop, searchptr, searchpropname);

	template_search = MEM_callocN(sizeof(*template_search), __func__);
	template_search->search_data.target_ptr = *ptr;
	template_search->search_data.target_prop = prop;
	template_search->search_data.search_ptr = *searchptr;
	template_search->search_data.search_prop = searchprop;

	return template_search;
}

/**
 * Search menu to pick an item from a collection.
 * A version of uiTemplateID that works for non-ID types.
 */
void uiTemplateSearch(
        uiLayout *layout, bContext *C,
        PointerRNA *ptr, const char *propname,
        PointerRNA *searchptr, const char *searchpropname,
        const char *newop, const char *unlinkop)
{
	TemplateSearch *template_search = template_search_setup(ptr, propname, searchptr, searchpropname);
	if (template_search != NULL) {
		template_search_buttons(C, layout, template_search, newop, unlinkop);
		MEM_freeN(template_search);
	}
}

void uiTemplateSearchPreview(
        uiLayout *layout, bContext *C,
        PointerRNA *ptr, const char *propname,
        PointerRNA *searchptr, const char *searchpropname,
        const char *newop, const char *unlinkop,
        const int rows, const int cols)
{
	TemplateSearch *template_search = template_search_setup(ptr, propname, searchptr, searchpropname);

	if (template_search != NULL) {
		template_search->use_previews = true;
		template_search->preview_rows = rows;
		template_search->preview_cols = cols;

		template_search_buttons(C, layout, template_search, newop, unlinkop);

		MEM_freeN(template_search);
	}
}

/********************* RNA Path Builder Template ********************/

/* ---------- */

/**
 * This is creating/editing RNA-Paths
 *
 * - ptr: struct which holds the path property
 * - propname: property identifier for property that path gets stored to
 * - root_ptr: struct that path gets built from
 */
void uiTemplatePathBuilder(
        uiLayout *layout, PointerRNA *ptr, const char *propname, PointerRNA *UNUSED(root_ptr),
        const char *text)
{
	PropertyRNA *propPath;
	uiLayout *row;

	/* check that properties are valid */
	propPath = RNA_struct_find_property(ptr, propname);
	if (!propPath || RNA_property_type(propPath) != PROP_STRING) {
		RNA_warning("path property not found: %s.%s", RNA_struct_identifier(ptr->type), propname);
		return;
	}

	/* Start drawing UI Elements using standard defines */
	row = uiLayoutRow(layout, true);

	/* Path (existing string) Widget */
	uiItemR(row, ptr, propname, 0, text, ICON_RNA);

	/* TODO: attach something to this to make allow searching of nested properties to 'build' the path */
}

/************************ Modifier Template *************************/

#define ERROR_LIBDATA_MESSAGE IFACE_("Can't edit external libdata")

static void modifiers_convertToReal(bContext *C, void *ob_v, void *md_v)
{
	Object *ob = ob_v;
	ModifierData *md = md_v;
	ModifierData *nmd = modifier_new(md->type);

	modifier_copyData(md, nmd);
	nmd->mode &= ~eModifierMode_Virtual;

	BLI_addhead(&ob->modifiers, nmd);

	modifier_unique_name(&ob->modifiers, nmd);

	ob->partype = PAROBJECT;

	WM_event_add_notifier(C, NC_OBJECT | ND_MODIFIER, ob);
	DEG_id_tag_update(&ob->id, OB_RECALC_DATA);

	ED_undo_push(C, "Modifier convert to real");
}

static int modifier_can_delete(ModifierData *md)
{
	/* fluid particle modifier can't be deleted here */
	if (md->type == eModifierType_ParticleSystem)
		if (((ParticleSystemModifierData *)md)->psys->part->type == PART_FLUID)
			return 0;

	return 1;
}

/* Check whether Modifier is a simulation or not, this is used for switching to the physics/particles context tab */
static int modifier_is_simulation(ModifierData *md)
{
	/* Physic Tab */
	if (ELEM(md->type, eModifierType_Cloth, eModifierType_Collision, eModifierType_Fluidsim, eModifierType_Smoke,
	          eModifierType_Softbody, eModifierType_Surface, eModifierType_DynamicPaint))
	{
		return 1;
	}
	/* Particle Tab */
	else if (md->type == eModifierType_ParticleSystem) {
		return 2;
	}
	else {
		return 0;
	}
}

static uiLayout *draw_modifier(
        uiLayout *layout, Scene *scene, Object *ob,
        ModifierData *md, int index, int cageIndex, int lastCageIndex)
{
	const ModifierTypeInfo *mti = modifierType_getInfo(md->type);
	PointerRNA ptr;
	uiBut *but;
	uiBlock *block;
	uiLayout *box, *column, *row, *sub;
	uiLayout *result = NULL;
	int isVirtual = (md->mode & eModifierMode_Virtual);
	char str[128];

	/* create RNA pointer */
	RNA_pointer_create(&ob->id, &RNA_Modifier, md, &ptr);

	column = uiLayoutColumn(layout, true);
	uiLayoutSetContextPointer(column, "modifier", &ptr);

	/* rounded header ------------------------------------------------------------------- */
	box = uiLayoutBox(column);

	if (isVirtual) {
		row = uiLayoutRow(box, false);
		uiLayoutSetAlignment(row, UI_LAYOUT_ALIGN_EXPAND);
		block = uiLayoutGetBlock(row);
		/* VIRTUAL MODIFIER */
		/* XXX this is not used now, since these cannot be accessed via RNA */
		BLI_snprintf(str, sizeof(str), IFACE_("%s parent deform"), md->name);
		uiDefBut(block, UI_BTYPE_LABEL, 0, str, 0, 0, 185, UI_UNIT_Y, NULL, 0.0, 0.0, 0.0, 0.0, TIP_("Modifier name"));

		but = uiDefBut(
		        block, UI_BTYPE_BUT, 0, IFACE_("Make Real"), 0, 0, 80, 16, NULL, 0.0, 0.0, 0.0, 0.0,
		        TIP_("Convert virtual modifier to a real modifier"));
		UI_but_func_set(but, modifiers_convertToReal, ob, md);
	}
	else {
		/* REAL MODIFIER */
		row = uiLayoutRow(box, false);
		block = uiLayoutGetBlock(row);

		UI_block_emboss_set(block, UI_EMBOSS_NONE);
		/* Open/Close .................................  */
		uiItemR(row, &ptr, "show_expanded", 0, "", ICON_NONE);

		/* modifier-type icon */
		uiItemL(row, "", RNA_struct_ui_icon(ptr.type));
		UI_block_emboss_set(block, UI_EMBOSS);

		/* modifier name */
		if (mti->isDisabled && mti->isDisabled(scene, md, 0)) {
			uiLayoutSetRedAlert(row, true);
		}
		uiItemR(row, &ptr, "name", 0, "", ICON_NONE);
		uiLayoutSetRedAlert(row, false);

		/* mode enabling buttons */
		UI_block_align_begin(block);
		/* Collision and Surface are always enabled, hide buttons! */
		if (((md->type != eModifierType_Collision) || !(ob->pd && ob->pd->deflect)) &&
		    (md->type != eModifierType_Surface) )
		{
			uiItemR(row, &ptr, "show_render", 0, "", ICON_NONE);
			uiItemR(row, &ptr, "show_viewport", 0, "", ICON_NONE);

			if (mti->flags & eModifierTypeFlag_SupportsEditmode) {
				sub = uiLayoutRow(row, true);
				if (!(md->mode & eModifierMode_Realtime)) {
					uiLayoutSetActive(sub, false);
				}
				uiItemR(sub, &ptr, "show_in_editmode", 0, "", ICON_NONE);
			}
		}

		if (ob->type == OB_MESH) {
			if (modifier_supportsCage(scene, md) && (index <= lastCageIndex)) {
				sub = uiLayoutRow(row, true);
				if (index < cageIndex || !modifier_couldBeCage(scene, md)) {
					uiLayoutSetActive(sub, false);
				}
				uiItemR(sub, &ptr, "show_on_cage", 0, "", ICON_NONE);
			}
		} /* tessellation point for curve-typed objects */
		else if (ELEM(ob->type, OB_CURVE, OB_SURF, OB_FONT)) {
			/* some modifiers could work with pre-tessellated curves only */
			if (ELEM(md->type, eModifierType_Hook, eModifierType_Softbody, eModifierType_MeshDeform)) {
				/* add disabled pre-tessellated button, so users could have
				 * message for this modifiers */
				but = uiDefIconButBitI(
				        block, UI_BTYPE_TOGGLE, eModifierMode_ApplyOnSpline, 0, ICON_SURFACE_DATA, 0, 0,
				        UI_UNIT_X - 2, UI_UNIT_Y, &md->mode, 0.0, 0.0, 0.0, 0.0,
				        TIP_("This modifier can only be applied on splines' points"));
				UI_but_flag_enable(but, UI_BUT_DISABLED);
			}
			else if (mti->type != eModifierTypeType_Constructive) {
				/* constructive modifiers tessellates curve before applying */
				uiItemR(row, &ptr, "use_apply_on_spline", 0, "", ICON_NONE);
			}
		}

		UI_block_align_end(block);

		/* Up/Down + Delete ........................... */
		UI_block_align_begin(block);
		uiItemO(row, "", ICON_TRIA_UP, "OBJECT_OT_modifier_move_up");
		uiItemO(row, "", ICON_TRIA_DOWN, "OBJECT_OT_modifier_move_down");
		UI_block_align_end(block);

		UI_block_emboss_set(block, UI_EMBOSS_NONE);
		/* When Modifier is a simulation, show button to switch to context rather than the delete button. */
		if (modifier_can_delete(md) &&
		    !modifier_is_simulation(md))
		{
			uiItemO(row, "", ICON_X, "OBJECT_OT_modifier_remove");
		}
		else if (modifier_is_simulation(md) == 1) {
			uiItemStringO(row, "", ICON_BUTS, "WM_OT_properties_context_change", "context", "PHYSICS");
		}
		else if (modifier_is_simulation(md) == 2) {
			uiItemStringO(row, "", ICON_BUTS, "WM_OT_properties_context_change", "context", "PARTICLES");
		}
		UI_block_emboss_set(block, UI_EMBOSS);
	}


	/* modifier settings (under the header) --------------------------------------------------- */
	if (!isVirtual && (md->mode & eModifierMode_Expanded)) {
		/* apply/convert/copy */
		box = uiLayoutBox(column);
		row = uiLayoutRow(box, false);

		if (!ELEM(md->type, eModifierType_Collision, eModifierType_Surface)) {
			/* only here obdata, the rest of modifiers is ob level */
			UI_block_lock_set(block, BKE_object_obdata_is_libdata(ob), ERROR_LIBDATA_MESSAGE);

			if (md->type == eModifierType_ParticleSystem) {
				ParticleSystem *psys = ((ParticleSystemModifierData *)md)->psys;

				if (!(ob->mode & OB_MODE_PARTICLE_EDIT)) {
					if (ELEM(psys->part->ren_as, PART_DRAW_GR, PART_DRAW_OB))
						uiItemO(row, CTX_IFACE_(BLT_I18NCONTEXT_OPERATOR_DEFAULT, "Convert"), ICON_NONE,
						        "OBJECT_OT_duplicates_make_real");
					else if (psys->part->ren_as == PART_DRAW_PATH && psys->pathcache)
						uiItemO(row, CTX_IFACE_(BLT_I18NCONTEXT_OPERATOR_DEFAULT, "Convert"), ICON_NONE,
						        "OBJECT_OT_modifier_convert");
				}
			}
			else {
				uiLayoutSetOperatorContext(row, WM_OP_INVOKE_DEFAULT);
				uiItemEnumO(
				        row, "OBJECT_OT_modifier_apply", CTX_IFACE_(BLT_I18NCONTEXT_OPERATOR_DEFAULT, "Apply"),
				        0, "apply_as", MODIFIER_APPLY_DATA);

				if (modifier_isSameTopology(md) && !modifier_isNonGeometrical(md)) {
					uiItemEnumO(
					        row, "OBJECT_OT_modifier_apply",
					        CTX_IFACE_(BLT_I18NCONTEXT_OPERATOR_DEFAULT, "Apply as Shape Key"),
					        0, "apply_as", MODIFIER_APPLY_SHAPE);
				}
			}

			UI_block_lock_clear(block);
			UI_block_lock_set(block, ob && ID_IS_LINKED(ob), ERROR_LIBDATA_MESSAGE);

			if (!ELEM(md->type, eModifierType_Fluidsim, eModifierType_Softbody, eModifierType_ParticleSystem,
			           eModifierType_Cloth, eModifierType_Smoke))
			{
				uiItemO(row, CTX_IFACE_(BLT_I18NCONTEXT_OPERATOR_DEFAULT, "Copy"), ICON_NONE,
				        "OBJECT_OT_modifier_copy");
			}
		}

		/* result is the layout block inside the box, that we return so that modifier settings can be drawn */
		result = uiLayoutColumn(box, false);
		block = uiLayoutAbsoluteBlock(box);
	}

	/* error messages */
	if (md->error) {
		box = uiLayoutBox(column);
		row = uiLayoutRow(box, false);
		uiItemL(row, md->error, ICON_ERROR);
	}

	return result;
}

uiLayout *uiTemplateModifier(uiLayout *layout, bContext *C, PointerRNA *ptr)
{
	Scene *scene = CTX_data_scene(C);
	Object *ob;
	ModifierData *md, *vmd;
	VirtualModifierData virtualModifierData;
	int i, lastCageIndex, cageIndex;

	/* verify we have valid data */
	if (!RNA_struct_is_a(ptr->type, &RNA_Modifier)) {
		RNA_warning("Expected modifier on object");
		return NULL;
	}

	ob = ptr->id.data;
	md = ptr->data;

	if (!ob || !(GS(ob->id.name) == ID_OB)) {
		RNA_warning("Expected modifier on object");
		return NULL;
	}

	UI_block_lock_set(uiLayoutGetBlock(layout), (ob && ID_IS_LINKED(ob)), ERROR_LIBDATA_MESSAGE);

	/* find modifier and draw it */
	cageIndex = modifiers_getCageIndex(scene, ob, &lastCageIndex, 0);

	/* XXX virtual modifiers are not accesible for python */
	vmd = modifiers_getVirtualModifierList(ob, &virtualModifierData);

	for (i = 0; vmd; i++, vmd = vmd->next) {
		if (md == vmd)
			return draw_modifier(layout, scene, ob, md, i, cageIndex, lastCageIndex);
		else if (vmd->mode & eModifierMode_Virtual)
			i--;
	}

	return NULL;
}


/************************ Redo Buttons Template *************************/

static bool template_operator_redo_property_buts_poll(PointerRNA *UNUSED(ptr), PropertyRNA *prop)
{
	return (RNA_property_tags(prop) & OP_PROP_TAG_ADVANCED) == 0;
}

static void template_operator_redo_property_buts_draw(
        const bContext *C, wmOperator *op,
        uiLayout *layout, int layout_flags,
        bool *r_has_advanced)
{
	if (op->type->flag & OPTYPE_MACRO) {
		for (wmOperator *macro_op = op->macro.first; macro_op; macro_op = macro_op->next) {
			template_operator_redo_property_buts_draw(C, macro_op, layout, layout_flags, r_has_advanced);
		}
	}
	else {
		/* Might want to make label_align adjustable somehow. */
		eAutoPropButsReturn return_info = uiTemplateOperatorPropertyButs(
		        C, layout, op, r_has_advanced ? template_operator_redo_property_buts_poll : NULL,
		        UI_BUT_LABEL_ALIGN_NONE, layout_flags);
		if (return_info & UI_PROP_BUTS_ANY_FAILED_CHECK) {
			if (r_has_advanced) {
				*r_has_advanced = true;
			}
		}
	}
}

void uiTemplateOperatorRedoProperties(uiLayout *layout, const bContext *C)
{
	wmOperator *op = WM_operator_last_redo(C);
	uiBlock *block = uiLayoutGetBlock(layout);

	if (op == NULL) {
		return;
	}

	/* Disable for now, doesn't fit well in popover. */
#if 0
	/* Repeat button with operator name as text. */
	uiItemFullO(layout, "SCREEN_OT_repeat_last", RNA_struct_ui_name(op->type->srna),
	            ICON_NONE, NULL, WM_OP_INVOKE_DEFAULT, 0, NULL);
#endif

	if (WM_operator_repeat_check(C, op)) {
		int layout_flags = 0;
		if (block->panel == NULL) {
			layout_flags = UI_TEMPLATE_OP_PROPS_SHOW_TITLE;
		}
#if 0
		bool has_advanced = false;
#endif

		UI_block_func_set(block, ED_undo_operator_repeat_cb, op, NULL);
		template_operator_redo_property_buts_draw(C, op, layout, layout_flags, NULL /* &has_advanced */ );
		UI_block_func_set(block, NULL, NULL, NULL); /* may want to reset to old state instead of NULLing all */

#if 0
		if (has_advanced) {
			uiItemO(layout, IFACE_("More..."), ICON_NONE, "SCREEN_OT_redo_last");
		}
#endif
	}
}

/************************ Constraint Template *************************/

#include "DNA_constraint_types.h"

#include "BKE_action.h"
#include "BKE_constraint.h"

#define B_CONSTRAINT_TEST           5
// #define B_CONSTRAINT_CHANGETARGET   6

static void do_constraint_panels(bContext *C, void *ob_pt, int event)
{
	Object *ob = (Object *)ob_pt;

	switch (event) {
		case B_CONSTRAINT_TEST:
			break; /* no handling */
#if 0	/* UNUSED */
		case B_CONSTRAINT_CHANGETARGET:
		{
			Main *bmain = CTX_data_main(C);
			if (ob->pose)
				BKE_pose_tag_recalc(bmain, ob->pose); /* checks & sorts pose channels */
			DEG_relations_tag_update(bmain);
			break;
		}
#endif
		default:
			break;
	}

	/* note: RNA updates now call this, commenting else it gets called twice.
	 * if there are problems because of this, then rna needs changed update functions.
	 *
	 * object_test_constraints(ob);
	 * if (ob->pose) BKE_pose_update_constraint_flags(ob->pose); */

	if (ob->type == OB_ARMATURE) DEG_id_tag_update(&ob->id, OB_RECALC_DATA | OB_RECALC_OB);
	else DEG_id_tag_update(&ob->id, OB_RECALC_OB);

	WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, ob);
}

static void constraint_active_func(bContext *UNUSED(C), void *ob_v, void *con_v)
{
	ED_object_constraint_set_active(ob_v, con_v);
}

/* draw panel showing settings for a constraint */
static uiLayout *draw_constraint(uiLayout *layout, Object *ob, bConstraint *con)
{
	bPoseChannel *pchan = BKE_pose_channel_active(ob);
	const bConstraintTypeInfo *cti;
	uiBlock *block;
	uiLayout *result = NULL, *col, *box, *row;
	PointerRNA ptr;
	char typestr[32];
	short proxy_protected, xco = 0, yco = 0;
	// int rb_col; // UNUSED

	/* get constraint typeinfo */
	cti = BKE_constraint_typeinfo_get(con);
	if (cti == NULL) {
		/* exception for 'Null' constraint - it doesn't have constraint typeinfo! */
		BLI_strncpy(typestr, (con->type == CONSTRAINT_TYPE_NULL) ? IFACE_("Null") : IFACE_("Unknown"), sizeof(typestr));
	}
	else
		BLI_strncpy(typestr, IFACE_(cti->name), sizeof(typestr));

	/* determine whether constraint is proxy protected or not */
	if (BKE_constraints_proxylocked_owner(ob, pchan))
		proxy_protected = (con->flag & CONSTRAINT_PROXY_LOCAL) == 0;
	else
		proxy_protected = 0;

	/* unless button has own callback, it adds this callback to button */
	block = uiLayoutGetBlock(layout);
	UI_block_func_handle_set(block, do_constraint_panels, ob);
	UI_block_func_set(block, constraint_active_func, ob, con);

	RNA_pointer_create(&ob->id, &RNA_Constraint, con, &ptr);

	col = uiLayoutColumn(layout, true);
	uiLayoutSetContextPointer(col, "constraint", &ptr);

	box = uiLayoutBox(col);
	row = uiLayoutRow(box, false);
	block = uiLayoutGetBlock(box);

	/* Draw constraint header */

	/* open/close */
	UI_block_emboss_set(block, UI_EMBOSS_NONE);
	uiItemR(row, &ptr, "show_expanded", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
	UI_block_emboss_set(block, UI_EMBOSS);

	/* name */
	uiDefBut(block, UI_BTYPE_LABEL, B_CONSTRAINT_TEST, typestr,
	         xco + 0.5f * UI_UNIT_X, yco, 5 * UI_UNIT_X, 0.9f * UI_UNIT_Y, NULL, 0.0, 0.0, 0.0, 0.0, "");

	if (con->flag & CONSTRAINT_DISABLE)
		uiLayoutSetRedAlert(row, true);

	if (proxy_protected == 0) {
		uiItemR(row, &ptr, "name", 0, "", ICON_NONE);
	}
	else
		uiItemL(row, con->name, ICON_NONE);

	uiLayoutSetRedAlert(row, false);

	/* proxy-protected constraints cannot be edited, so hide up/down + close buttons */
	if (proxy_protected) {
		UI_block_emboss_set(block, UI_EMBOSS_NONE);

		/* draw a ghost icon (for proxy) and also a lock beside it, to show that constraint is "proxy locked" */
		uiDefIconBut(block, UI_BTYPE_BUT, B_CONSTRAINT_TEST, ICON_GHOST, xco + 12.2f * UI_UNIT_X, yco, 0.95f * UI_UNIT_X, 0.95f * UI_UNIT_Y,
		             NULL, 0.0, 0.0, 0.0, 0.0, TIP_("Proxy Protected"));
		uiDefIconBut(block, UI_BTYPE_BUT, B_CONSTRAINT_TEST, ICON_LOCKED, xco + 13.1f * UI_UNIT_X, yco, 0.95f * UI_UNIT_X, 0.95f * UI_UNIT_Y,
		             NULL, 0.0, 0.0, 0.0, 0.0, TIP_("Proxy Protected"));

		UI_block_emboss_set(block, UI_EMBOSS);
	}
	else {
		short prev_proxylock, show_upbut, show_downbut;

		/* Up/Down buttons:
		 *	Proxy-constraints are not allowed to occur after local (non-proxy) constraints
		 *	as that poses problems when restoring them, so disable the "up" button where
		 *	it may cause this situation.
		 *
		 *  Up/Down buttons should only be shown (or not grayed - todo) if they serve some purpose.
		 */
		if (BKE_constraints_proxylocked_owner(ob, pchan)) {
			if (con->prev) {
				prev_proxylock = (con->prev->flag & CONSTRAINT_PROXY_LOCAL) ? 0 : 1;
			}
			else
				prev_proxylock = 0;
		}
		else
			prev_proxylock = 0;

		show_upbut = ((prev_proxylock == 0) && (con->prev));
		show_downbut = (con->next) ? 1 : 0;

		/* enabled */
		UI_block_emboss_set(block, UI_EMBOSS_NONE);
		uiItemR(row, &ptr, "mute", 0, "",
		        (con->flag & CONSTRAINT_OFF) ? ICON_HIDE_ON : ICON_HIDE_OFF);
		UI_block_emboss_set(block, UI_EMBOSS);

		uiLayoutSetOperatorContext(row, WM_OP_INVOKE_DEFAULT);

		/* up/down */
		if (show_upbut || show_downbut) {
			UI_block_align_begin(block);
			if (show_upbut)
				uiItemO(row, "", ICON_TRIA_UP, "CONSTRAINT_OT_move_up");

			if (show_downbut)
				uiItemO(row, "", ICON_TRIA_DOWN, "CONSTRAINT_OT_move_down");
			UI_block_align_end(block);
		}

		/* Close 'button' - emboss calls here disable drawing of 'button' behind X */
		UI_block_emboss_set(block, UI_EMBOSS_NONE);
		uiItemO(row, "", ICON_X, "CONSTRAINT_OT_delete");
		UI_block_emboss_set(block, UI_EMBOSS);
	}

	/* Set but-locks for protected settings (magic numbers are used here!) */
	if (proxy_protected)
		UI_block_lock_set(block, true, IFACE_("Cannot edit Proxy-Protected Constraint"));

	/* Draw constraint data */
	if ((con->flag & CONSTRAINT_EXPAND) == 0) {
		(yco) -= 10.5f * UI_UNIT_Y;
	}
	else {
		box = uiLayoutBox(col);
		block = uiLayoutAbsoluteBlock(box);
		result = box;
	}

	/* clear any locks set up for proxies/lib-linking */
	UI_block_lock_clear(block);

	return result;
}

uiLayout *uiTemplateConstraint(uiLayout *layout, PointerRNA *ptr)
{
	Object *ob;
	bConstraint *con;

	/* verify we have valid data */
	if (!RNA_struct_is_a(ptr->type, &RNA_Constraint)) {
		RNA_warning("Expected constraint on object");
		return NULL;
	}

	ob = ptr->id.data;
	con = ptr->data;

	if (!ob || !(GS(ob->id.name) == ID_OB)) {
		RNA_warning("Expected constraint on object");
		return NULL;
	}

	UI_block_lock_set(uiLayoutGetBlock(layout), (ob && ID_IS_LINKED(ob)), ERROR_LIBDATA_MESSAGE);

	/* hrms, the temporal constraint should not draw! */
	if (con->type == CONSTRAINT_TYPE_KINEMATIC) {
		bKinematicConstraint *data = con->data;
		if (data->flag & CONSTRAINT_IK_TEMP)
			return NULL;
	}

	return draw_constraint(layout, ob, con);
}


/************************* Preview Template ***************************/

#include "DNA_lamp_types.h"
#include "DNA_material_types.h"
#include "DNA_world_types.h"

#define B_MATPRV 1

static void do_preview_buttons(bContext *C, void *arg, int event)
{
	switch (event) {
		case B_MATPRV:
			WM_event_add_notifier(C, NC_MATERIAL | ND_SHADING_PREVIEW, arg);
			break;
	}
}

void uiTemplatePreview(
        uiLayout *layout, bContext *C, ID *id, bool show_buttons, ID *parent, MTex *slot,
        const char *preview_id)
{
	uiLayout *row, *col;
	uiBlock *block;
	uiPreview *ui_preview = NULL;
	ARegion *ar;

	Material *ma = NULL;
	Tex *tex = (Tex *)id;
	ID *pid, *pparent;
	short *pr_texture = NULL;
	PointerRNA material_ptr;
	PointerRNA texture_ptr;

	char _preview_id[UI_MAX_NAME_STR];

	if (id && !ELEM(GS(id->name), ID_MA, ID_TE, ID_WO, ID_LA, ID_LS)) {
		RNA_warning("Expected ID of type material, texture, lamp, world or line style");
		return;
	}

	/* decide what to render */
	pid = id;
	pparent = NULL;

	if (id && (GS(id->name) == ID_TE)) {
		if (parent && (GS(parent->name) == ID_MA))
			pr_texture = &((Material *)parent)->pr_texture;
		else if (parent && (GS(parent->name) == ID_WO))
			pr_texture = &((World *)parent)->pr_texture;
		else if (parent && (GS(parent->name) == ID_LA))
			pr_texture = &((Lamp *)parent)->pr_texture;
		else if (parent && (GS(parent->name) == ID_LS))
			pr_texture = &((FreestyleLineStyle *)parent)->pr_texture;

		if (pr_texture) {
			if (*pr_texture == TEX_PR_OTHER)
				pid = parent;
			else if (*pr_texture == TEX_PR_BOTH)
				pparent = parent;
		}
	}

	if (!preview_id || (preview_id[0] == '\0')) {
		/* If no identifier given, generate one from ID type. */
		BLI_snprintf(_preview_id, UI_MAX_NAME_STR, "uiPreview_%s", BKE_idcode_to_name(GS(id->name)));
		preview_id = _preview_id;
	}

	/* Find or add the uiPreview to the current Region. */
	ar = CTX_wm_region(C);
	ui_preview = BLI_findstring(&ar->ui_previews, preview_id, offsetof(uiPreview, preview_id));

	if (!ui_preview) {
		ui_preview = MEM_callocN(sizeof(uiPreview), "uiPreview");
		BLI_strncpy(ui_preview->preview_id, preview_id, sizeof(ui_preview->preview_id));
		ui_preview->height = (short)(UI_UNIT_Y * 5.6f);
		BLI_addtail(&ar->ui_previews, ui_preview);
	}

	if (ui_preview->height < UI_UNIT_Y) {
		ui_preview->height = UI_UNIT_Y;
	}
	else if (ui_preview->height > UI_UNIT_Y * 50) {  /* Rather high upper limit, yet not insane! */
		ui_preview->height = UI_UNIT_Y * 50;
	}

	/* layout */
	block = uiLayoutGetBlock(layout);
	row = uiLayoutRow(layout, false);
	col = uiLayoutColumn(row, false);
	uiLayoutSetKeepAspect(col, true);

	/* add preview */
	uiDefBut(block, UI_BTYPE_EXTRA, 0, "", 0, 0, UI_UNIT_X * 10, ui_preview->height, pid, 0.0, 0.0, 0, 0, "");
	UI_but_func_drawextra_set(block, ED_preview_draw, pparent, slot);
	UI_block_func_handle_set(block, do_preview_buttons, NULL);

	uiDefIconButS(
	        block, UI_BTYPE_GRIP, 0, ICON_GRIP, 0, 0, UI_UNIT_X * 10, (short)(UI_UNIT_Y * 0.3f), &ui_preview->height,
	        UI_UNIT_Y, UI_UNIT_Y * 50.0f, 0.0f, 0.0f, "");

	/* add buttons */
	if (pid && show_buttons) {
		if (GS(pid->name) == ID_MA || (pparent && GS(pparent->name) == ID_MA)) {
			if (GS(pid->name) == ID_MA) ma = (Material *)pid;
			else ma = (Material *)pparent;

			/* Create RNA Pointer */
			RNA_pointer_create(&ma->id, &RNA_Material, ma, &material_ptr);

			col = uiLayoutColumn(row, true);
			uiLayoutSetScaleX(col, 1.5);
			uiItemR(col, &material_ptr, "preview_render_type", UI_ITEM_R_EXPAND, "", ICON_NONE);
		}

		if (pr_texture) {
			/* Create RNA Pointer */
			RNA_pointer_create(id, &RNA_Texture, tex, &texture_ptr);

			uiLayoutRow(layout, true);
			uiDefButS(block, UI_BTYPE_ROW, B_MATPRV, IFACE_("Texture"),  0, 0, UI_UNIT_X * 10, UI_UNIT_Y,
			          pr_texture, 10, TEX_PR_TEXTURE, 0, 0, "");
			if (GS(parent->name) == ID_MA) {
				uiDefButS(block, UI_BTYPE_ROW, B_MATPRV, IFACE_("Material"),  0, 0, UI_UNIT_X * 10, UI_UNIT_Y,
				          pr_texture, 10, TEX_PR_OTHER, 0, 0, "");
			}
			else if (GS(parent->name) == ID_LA) {
				uiDefButS(block, UI_BTYPE_ROW, B_MATPRV, IFACE_("Lamp"),  0, 0, UI_UNIT_X * 10, UI_UNIT_Y,
				          pr_texture, 10, TEX_PR_OTHER, 0, 0, "");
			}
			else if (GS(parent->name) == ID_WO) {
				uiDefButS(block, UI_BTYPE_ROW, B_MATPRV, IFACE_("World"),  0, 0, UI_UNIT_X * 10, UI_UNIT_Y,
				          pr_texture, 10, TEX_PR_OTHER, 0, 0, "");
			}
			else if (GS(parent->name) == ID_LS) {
				uiDefButS(block, UI_BTYPE_ROW, B_MATPRV, IFACE_("Line Style"),  0, 0, UI_UNIT_X * 10, UI_UNIT_Y,
				          pr_texture, 10, TEX_PR_OTHER, 0, 0, "");
			}
			uiDefButS(block, UI_BTYPE_ROW, B_MATPRV, IFACE_("Both"),  0, 0, UI_UNIT_X * 10, UI_UNIT_Y,
			          pr_texture, 10, TEX_PR_BOTH, 0, 0, "");

			/* Alpha button for texture preview */
			if (*pr_texture != TEX_PR_OTHER) {
				row = uiLayoutRow(layout, false);
				uiItemR(row, &texture_ptr, "use_preview_alpha", 0, NULL, ICON_NONE);
			}
		}
	}
}

/********************** ColorRamp Template **************************/


typedef struct RNAUpdateCb {
	PointerRNA ptr;
	PropertyRNA *prop;
} RNAUpdateCb;

static void rna_update_cb(bContext *C, void *arg_cb, void *UNUSED(arg))
{
	RNAUpdateCb *cb = (RNAUpdateCb *)arg_cb;

	/* we call update here on the pointer property, this way the
	 * owner of the curve mapping can still define it's own update
	 * and notifier, even if the CurveMapping struct is shared. */
	RNA_property_update(C, &cb->ptr, cb->prop);
}

static void colorband_add_cb(bContext *C, void *cb_v, void *coba_v)
{
	ColorBand *coba = coba_v;
	float pos = 0.5f;

	if (coba->tot > 1) {
		if (coba->cur > 0) pos = (coba->data[coba->cur - 1].pos + coba->data[coba->cur].pos) * 0.5f;
		else pos = (coba->data[coba->cur + 1].pos + coba->data[coba->cur].pos) * 0.5f;
	}

	if (BKE_colorband_element_add(coba, pos)) {
		rna_update_cb(C, cb_v, NULL);
		ED_undo_push(C, "Add colorband");
	}
}

static void colorband_del_cb(bContext *C, void *cb_v, void *coba_v)
{
	ColorBand *coba = coba_v;

	if (BKE_colorband_element_remove(coba, coba->cur)) {
		ED_undo_push(C, "Delete colorband");
		rna_update_cb(C, cb_v, NULL);
	}
}

static void colorband_flip_cb(bContext *C, void *cb_v, void *coba_v)
{
	CBData data_tmp[MAXCOLORBAND];

	ColorBand *coba = coba_v;
	int a;

	for (a = 0; a < coba->tot; a++) {
		data_tmp[a] = coba->data[coba->tot - (a + 1)];
	}
	for (a = 0; a < coba->tot; a++) {
		data_tmp[a].pos = 1.0f - data_tmp[a].pos;
		coba->data[a] = data_tmp[a];
	}

	/* may as well flip the cur*/
	coba->cur = coba->tot - (coba->cur + 1);

	ED_undo_push(C, "Flip colorband");

	rna_update_cb(C, cb_v, NULL);
}

static void colorband_update_cb(bContext *UNUSED(C), void *bt_v, void *coba_v)
{
	uiBut *bt = bt_v;
	ColorBand *coba = coba_v;

	/* sneaky update here, we need to sort the colorband points to be in order,
	 * however the RNA pointer then is wrong, so we update it */
	BKE_colorband_update_sort(coba);
	bt->rnapoin.data = coba->data + coba->cur;
}

static void colorband_buttons_layout(
        uiLayout *layout, uiBlock *block, ColorBand *coba, const rctf *butr,
        RNAUpdateCb *cb, int expand)
{
	uiLayout *row, *split, *subsplit;
	uiBut *bt;
	float unit = BLI_rctf_size_x(butr) / 14.0f;
	float xs = butr->xmin;
	float ys = butr->ymin;
	PointerRNA ptr;

	RNA_pointer_create(cb->ptr.id.data, &RNA_ColorRamp, coba, &ptr);

	split = uiLayoutSplit(layout, 0.4f, false);

	UI_block_emboss_set(block, UI_EMBOSS_NONE);
	UI_block_align_begin(block);
	row = uiLayoutRow(split, false);

	bt = uiDefIconTextBut(
	        block, UI_BTYPE_BUT, 0, ICON_ZOOMIN, "", 0, 0, 2.0f * unit, UI_UNIT_Y, NULL,
	        0, 0, 0, 0, TIP_("Add a new color stop to the colorband"));

	UI_but_funcN_set(bt, colorband_add_cb, MEM_dupallocN(cb), coba);

	bt = uiDefIconTextBut(
	        block, UI_BTYPE_BUT, 0, ICON_ZOOMOUT, "", xs +  2.0f * unit, ys + UI_UNIT_Y, 2.0f * unit, UI_UNIT_Y,
	        NULL, 0, 0, 0, 0, TIP_("Delete the active position"));
	UI_but_funcN_set(bt, colorband_del_cb, MEM_dupallocN(cb), coba);

	bt = uiDefIconTextBut(
	        block, UI_BTYPE_BUT, 0, ICON_ARROW_LEFTRIGHT, "", xs + 4.0f * unit, ys + UI_UNIT_Y, 2.0f * unit, UI_UNIT_Y,
	        NULL, 0, 0, 0, 0, TIP_("Flip the color ramp"));
	UI_but_funcN_set(bt, colorband_flip_cb, MEM_dupallocN(cb), coba);

	bt = uiDefIconButO(block, UI_BTYPE_BUT, "UI_OT_eyedropper_colorband", WM_OP_INVOKE_DEFAULT, ICON_EYEDROPPER, xs + 6.0f * unit, ys + UI_UNIT_Y, UI_UNIT_X, UI_UNIT_Y, NULL);
	bt->custom_data = coba;
	bt->func_argN = MEM_dupallocN(cb);

	UI_block_align_end(block);
	UI_block_emboss_set(block, UI_EMBOSS);

	row = uiLayoutRow(split, false);

	UI_block_align_begin(block);
	uiItemR(row, &ptr, "color_mode", 0, "", ICON_NONE);
	if (ELEM(coba->color_mode, COLBAND_BLEND_HSV, COLBAND_BLEND_HSL)) {
		uiItemR(row, &ptr, "hue_interpolation", 0, "", ICON_NONE);
	}
	else {  /* COLBAND_BLEND_RGB */
		uiItemR(row, &ptr, "interpolation", 0, "", ICON_NONE);
	}
	UI_block_align_end(block);

	row = uiLayoutRow(layout, false);

	bt = uiDefBut(block, UI_BTYPE_COLORBAND, 0, "", xs, ys, BLI_rctf_size_x(butr), UI_UNIT_Y, coba, 0, 0, 0, 0, "");
	UI_but_funcN_set(bt, rna_update_cb, MEM_dupallocN(cb), NULL);

	row = uiLayoutRow(layout, false);

	if (coba->tot) {
		CBData *cbd = coba->data + coba->cur;

		RNA_pointer_create(cb->ptr.id.data, &RNA_ColorRampElement, cbd, &ptr);

		if (!expand) {
			split = uiLayoutSplit(layout, 0.3f, false);

			row = uiLayoutRow(split, false);
			uiDefButS(block, UI_BTYPE_NUM, 0, "", 0, 0, 5.0f * UI_UNIT_X, UI_UNIT_Y, &coba->cur, 0.0, (float)(MAX2(0, coba->tot - 1)),
			          0, 0, TIP_("Choose active color stop"));
			row = uiLayoutRow(split, false);
			uiItemR(row, &ptr, "position", 0, IFACE_("Pos"), ICON_NONE);
			bt = block->buttons.last;
			bt->a1 = 1.0f; /* gives a bit more precision for modifying position */
			UI_but_func_set(bt, colorband_update_cb, bt, coba);

			row = uiLayoutRow(layout, false);
			uiItemR(row, &ptr, "color", 0, "", ICON_NONE);
			bt = block->buttons.last;
			UI_but_funcN_set(bt, rna_update_cb, MEM_dupallocN(cb), NULL);
		}
		else {
			split = uiLayoutSplit(layout, 0.5f, false);
			subsplit = uiLayoutSplit(split, 0.35f, false);

			row = uiLayoutRow(subsplit, false);
			uiDefButS(block, UI_BTYPE_NUM, 0, "", 0, 0, 5.0f * UI_UNIT_X, UI_UNIT_Y, &coba->cur, 0.0, (float)(MAX2(0, coba->tot - 1)),
			          0, 0, TIP_("Choose active color stop"));
			row = uiLayoutRow(subsplit, false);
			uiItemR(row, &ptr, "position", UI_ITEM_R_SLIDER, IFACE_("Pos"), ICON_NONE);
			bt = block->buttons.last;
			bt->a1 = 1.0f; /* gives a bit more precision for modifying position */
			UI_but_func_set(bt, colorband_update_cb, bt, coba);

			row = uiLayoutRow(split, false);
			uiItemR(row, &ptr, "color", 0, "", ICON_NONE);
			bt = block->buttons.last;
			UI_but_funcN_set(bt, rna_update_cb, MEM_dupallocN(cb), NULL);
		}
	}
}

void uiTemplateColorRamp(uiLayout *layout, PointerRNA *ptr, const char *propname, bool expand)
{
	PropertyRNA *prop = RNA_struct_find_property(ptr, propname);
	PointerRNA cptr;
	RNAUpdateCb *cb;
	uiBlock *block;
	ID *id;
	rctf rect;

	if (!prop || RNA_property_type(prop) != PROP_POINTER)
		return;

	cptr = RNA_property_pointer_get(ptr, prop);
	if (!cptr.data || !RNA_struct_is_a(cptr.type, &RNA_ColorRamp))
		return;

	cb = MEM_callocN(sizeof(RNAUpdateCb), "RNAUpdateCb");
	cb->ptr = *ptr;
	cb->prop = prop;

	rect.xmin = 0; rect.xmax = 10.0f * UI_UNIT_X;
	rect.ymin = 0; rect.ymax = 19.5f * UI_UNIT_X;

	block = uiLayoutAbsoluteBlock(layout);

	id = cptr.id.data;
	UI_block_lock_set(block, (id && ID_IS_LINKED(id)), ERROR_LIBDATA_MESSAGE);

	colorband_buttons_layout(layout, block, cptr.data, &rect, cb, expand);

	UI_block_lock_clear(block);

	MEM_freeN(cb);
}

/********************* Icon Template ************************/
/**
 * \param icon_scale: Scale of the icon, 1x == button height.
 */
void uiTemplateIcon(uiLayout *layout, int icon_value, float icon_scale)
{
	uiBlock *block;
	uiBut *but;

	block = uiLayoutAbsoluteBlock(layout);
	but = uiDefIconBut(block, UI_BTYPE_LABEL, 0, ICON_X, 0, 0, UI_UNIT_X * icon_scale, UI_UNIT_Y * icon_scale, NULL, 0.0, 0.0, 0.0, 0.0, "");
	ui_def_but_icon(but, icon_value, UI_HAS_ICON | UI_BUT_ICON_PREVIEW);
}

/********************* Icon viewer Template ************************/
typedef struct IconViewMenuArgs {
	PointerRNA ptr;
	PropertyRNA *prop;
	bool show_labels;
	float icon_scale;
} IconViewMenuArgs;

/* ID Search browse menu, open */
static uiBlock *ui_icon_view_menu_cb(bContext *C, ARegion *ar, void *arg_litem)
{
	static IconViewMenuArgs args;
	uiBlock *block;
	uiBut *but;
	int icon, value;
	const EnumPropertyItem *item;
	int a;
	bool free;
	int w, h;

	/* arg_litem is malloced, can be freed by parent button */
	args = *((IconViewMenuArgs *) arg_litem);
	w = UI_UNIT_X * (args.icon_scale);
	h = UI_UNIT_X * (args.icon_scale + args.show_labels);

	block = UI_block_begin(C, ar, "_popup", UI_EMBOSS_PULLDOWN);
	UI_block_flag_enable(block, UI_BLOCK_LOOP | UI_BLOCK_NO_FLIP);

	RNA_property_enum_items(C, &args.ptr, args.prop, &item, NULL, &free);

	for (a = 0; item[a].identifier; a++) {
		int x, y;

		x = (a % 8) * w;
		y = -(a / 8) * h;

		icon = item[a].icon;
		value = item[a].value;
		if (args.show_labels) {
			but = uiDefIconTextButR_prop(
			        block, UI_BTYPE_ROW, 0, icon, item[a].name, x, y, w, h,
			        &args.ptr, args.prop, -1, 0, value, -1, -1, NULL);
		}
		else {
			but = uiDefIconButR_prop(
			        block, UI_BTYPE_ROW, 0, icon, x, y, w, h,
			        &args.ptr, args.prop, -1, 0, value, -1, -1, NULL);
		}
		ui_def_but_icon(but, icon, UI_HAS_ICON | UI_BUT_ICON_PREVIEW);
	}

	UI_block_bounds_set_normal(block, 0.3f * U.widget_unit);
	UI_block_direction_set(block, UI_DIR_DOWN);

	if (free) {
		MEM_freeN((void *)item);
	}

	return block;
}

/**
 * \param icon_scale: Scale of the icon, 1x == button height.
 */
void uiTemplateIconView(uiLayout *layout, PointerRNA *ptr, const char *propname, bool show_labels, float icon_scale)
{
	PropertyRNA *prop = RNA_struct_find_property(ptr, propname);
	IconViewMenuArgs *cb_args;
	const EnumPropertyItem *items;
	uiBlock *block;
	uiBut *but;
	int value, icon = ICON_NONE, tot_items;
	bool free_items;

	if (!prop || RNA_property_type(prop) != PROP_ENUM) {
		RNA_warning("property of type Enum not found: %s.%s", RNA_struct_identifier(ptr->type), propname);
		return;
	}

	block = uiLayoutAbsoluteBlock(layout);

	RNA_property_enum_items(block->evil_C, ptr, prop, &items, &tot_items, &free_items);
	value = RNA_property_enum_get(ptr, prop);
	RNA_enum_icon_from_value(items, value, &icon);


	if (RNA_property_editable(ptr, prop)) {
		cb_args = MEM_callocN(sizeof(IconViewMenuArgs), __func__);
		cb_args->ptr = *ptr;
		cb_args->prop = prop;
		cb_args->show_labels = show_labels;
		cb_args->icon_scale = icon_scale;

		but = uiDefBlockButN(block, ui_icon_view_menu_cb, cb_args, "", 0, 0, UI_UNIT_X * 6, UI_UNIT_Y * 6, "");
	}
	else {
		but = uiDefIconBut(block, UI_BTYPE_LABEL, 0, ICON_X, 0, 0, UI_UNIT_X * 6, UI_UNIT_Y * 6, NULL, 0.0, 0.0, 0.0, 0.0, "");
	}


	ui_def_but_icon(but, icon, UI_HAS_ICON | UI_BUT_ICON_PREVIEW);

	if (free_items) {
		MEM_freeN((void *)items);
	}
}

/********************* Histogram Template ************************/

void uiTemplateHistogram(uiLayout *layout, PointerRNA *ptr, const char *propname)
{
	PropertyRNA *prop = RNA_struct_find_property(ptr, propname);
	PointerRNA cptr;
	uiBlock *block;
	uiLayout *col;
	Histogram *hist;

	if (!prop || RNA_property_type(prop) != PROP_POINTER)
		return;

	cptr = RNA_property_pointer_get(ptr, prop);
	if (!cptr.data || !RNA_struct_is_a(cptr.type, &RNA_Histogram))
		return;
	hist = (Histogram *)cptr.data;

	if (hist->height < UI_UNIT_Y) {
		hist->height = UI_UNIT_Y;
	}
	else if (hist->height > UI_UNIT_Y * 20) {
		hist->height = UI_UNIT_Y * 20;
	}

	col = uiLayoutColumn(layout, true);
	block = uiLayoutGetBlock(col);

	uiDefBut(block, UI_BTYPE_HISTOGRAM, 0, "", 0, 0, UI_UNIT_X * 10, hist->height, hist, 0, 0, 0, 0, "");

	/* Resize grip. */
	uiDefIconButI(block, UI_BTYPE_GRIP, 0, ICON_GRIP, 0, 0, UI_UNIT_X * 10, (short)(UI_UNIT_Y * 0.3f), &hist->height,
	              UI_UNIT_Y, UI_UNIT_Y * 20.0f, 0.0f, 0.0f, "");
}

/********************* Waveform Template ************************/

void uiTemplateWaveform(uiLayout *layout, PointerRNA *ptr, const char *propname)
{
	PropertyRNA *prop = RNA_struct_find_property(ptr, propname);
	PointerRNA cptr;
	uiBlock *block;
	uiLayout *col;
	Scopes *scopes;

	if (!prop || RNA_property_type(prop) != PROP_POINTER)
		return;

	cptr = RNA_property_pointer_get(ptr, prop);
	if (!cptr.data || !RNA_struct_is_a(cptr.type, &RNA_Scopes))
		return;
	scopes = (Scopes *)cptr.data;

	col = uiLayoutColumn(layout, true);
	block = uiLayoutGetBlock(col);

	if (scopes->wavefrm_height < UI_UNIT_Y) {
		scopes->wavefrm_height = UI_UNIT_Y;
	}
	else if (scopes->wavefrm_height > UI_UNIT_Y * 20) {
		scopes->wavefrm_height = UI_UNIT_Y * 20;
	}

	uiDefBut(block, UI_BTYPE_WAVEFORM, 0, "", 0, 0, UI_UNIT_X * 10, scopes->wavefrm_height, scopes, 0, 0, 0, 0, "");

	/* Resize grip. */
	uiDefIconButI(block, UI_BTYPE_GRIP, 0, ICON_GRIP, 0, 0, UI_UNIT_X * 10, (short)(UI_UNIT_Y * 0.3f), &scopes->wavefrm_height,
	              UI_UNIT_Y, UI_UNIT_Y * 20.0f, 0.0f, 0.0f, "");
}

/********************* Vectorscope Template ************************/

void uiTemplateVectorscope(uiLayout *layout, PointerRNA *ptr, const char *propname)
{
	PropertyRNA *prop = RNA_struct_find_property(ptr, propname);
	PointerRNA cptr;
	uiBlock *block;
	uiLayout *col;
	Scopes *scopes;

	if (!prop || RNA_property_type(prop) != PROP_POINTER)
		return;

	cptr = RNA_property_pointer_get(ptr, prop);
	if (!cptr.data || !RNA_struct_is_a(cptr.type, &RNA_Scopes))
		return;
	scopes = (Scopes *)cptr.data;

	if (scopes->vecscope_height < UI_UNIT_Y) {
		scopes->vecscope_height = UI_UNIT_Y;
	}
	else if (scopes->vecscope_height > UI_UNIT_Y * 20) {
		scopes->vecscope_height = UI_UNIT_Y * 20;
	}

	col = uiLayoutColumn(layout, true);
	block = uiLayoutGetBlock(col);

	uiDefBut(block, UI_BTYPE_VECTORSCOPE, 0, "", 0, 0, UI_UNIT_X * 10, scopes->vecscope_height, scopes, 0, 0, 0, 0, "");

	/* Resize grip. */
	uiDefIconButI(block, UI_BTYPE_GRIP, 0, ICON_GRIP, 0, 0, UI_UNIT_X * 10, (short)(UI_UNIT_Y * 0.3f), &scopes->vecscope_height,
	              UI_UNIT_Y, UI_UNIT_Y * 20.0f, 0.0f, 0.0f, "");
}

/********************* CurveMapping Template ************************/


static void curvemap_buttons_zoom_in(bContext *C, void *cumap_v, void *UNUSED(arg))
{
	CurveMapping *cumap = cumap_v;
	float d;

	/* we allow 20 times zoom */
	if (BLI_rctf_size_x(&cumap->curr) > 0.04f * BLI_rctf_size_x(&cumap->clipr)) {
		d = 0.1154f * BLI_rctf_size_x(&cumap->curr);
		cumap->curr.xmin += d;
		cumap->curr.xmax -= d;
		d = 0.1154f * BLI_rctf_size_y(&cumap->curr);
		cumap->curr.ymin += d;
		cumap->curr.ymax -= d;
	}

	ED_region_tag_redraw(CTX_wm_region(C));
}

static void curvemap_buttons_zoom_out(bContext *C, void *cumap_v, void *UNUSED(unused))
{
	CurveMapping *cumap = cumap_v;
	float d, d1;

	/* we allow 20 times zoom, but don't view outside clip */
	if (BLI_rctf_size_x(&cumap->curr) < 20.0f * BLI_rctf_size_x(&cumap->clipr)) {
		d = d1 = 0.15f * BLI_rctf_size_x(&cumap->curr);

		if (cumap->flag & CUMA_DO_CLIP)
			if (cumap->curr.xmin - d < cumap->clipr.xmin)
				d1 = cumap->curr.xmin - cumap->clipr.xmin;
		cumap->curr.xmin -= d1;

		d1 = d;
		if (cumap->flag & CUMA_DO_CLIP)
			if (cumap->curr.xmax + d > cumap->clipr.xmax)
				d1 = -cumap->curr.xmax + cumap->clipr.xmax;
		cumap->curr.xmax += d1;

		d = d1 = 0.15f * BLI_rctf_size_y(&cumap->curr);

		if (cumap->flag & CUMA_DO_CLIP)
			if (cumap->curr.ymin - d < cumap->clipr.ymin)
				d1 = cumap->curr.ymin - cumap->clipr.ymin;
		cumap->curr.ymin -= d1;

		d1 = d;
		if (cumap->flag & CUMA_DO_CLIP)
			if (cumap->curr.ymax + d > cumap->clipr.ymax)
				d1 = -cumap->curr.ymax + cumap->clipr.ymax;
		cumap->curr.ymax += d1;
	}

	ED_region_tag_redraw(CTX_wm_region(C));
}

static void curvemap_buttons_setclip(bContext *UNUSED(C), void *cumap_v, void *UNUSED(arg))
{
	CurveMapping *cumap = cumap_v;

	curvemapping_changed(cumap, false);
}

static void curvemap_buttons_delete(bContext *C, void *cb_v, void *cumap_v)
{
	CurveMapping *cumap = cumap_v;

	curvemap_remove(cumap->cm + cumap->cur, SELECT);
	curvemapping_changed(cumap, false);

	rna_update_cb(C, cb_v, NULL);
}

/* NOTE: this is a block-menu, needs 0 events, otherwise the menu closes */
static uiBlock *curvemap_clipping_func(bContext *C, ARegion *ar, void *cumap_v)
{
	CurveMapping *cumap = cumap_v;
	uiBlock *block;
	uiBut *bt;
	float width = 8 * UI_UNIT_X;

	block = UI_block_begin(C, ar, __func__, UI_EMBOSS);

	/* use this for a fake extra empy space around the buttons */
	uiDefBut(block, UI_BTYPE_LABEL, 0, "",           -4, 16, width + 8, 6 * UI_UNIT_Y, NULL, 0, 0, 0, 0, "");

	bt = uiDefButBitI(
	        block, UI_BTYPE_TOGGLE, CUMA_DO_CLIP, 1, IFACE_("Use Clipping"),
	        0, 5 * UI_UNIT_Y, width, UI_UNIT_Y, &cumap->flag, 0.0, 0.0, 10, 0, "");
	UI_but_func_set(bt, curvemap_buttons_setclip, cumap, NULL);

	UI_block_align_begin(block);
	uiDefButF(block, UI_BTYPE_NUM, 0, IFACE_("Min X "),   0, 4 * UI_UNIT_Y, width, UI_UNIT_Y,
	          &cumap->clipr.xmin, -100.0, cumap->clipr.xmax, 10, 2, "");
	uiDefButF(block, UI_BTYPE_NUM, 0, IFACE_("Min Y "),   0, 3 * UI_UNIT_Y, width, UI_UNIT_Y,
	          &cumap->clipr.ymin, -100.0, cumap->clipr.ymax, 10, 2, "");
	uiDefButF(block, UI_BTYPE_NUM, 0, IFACE_("Max X "),   0, 2 * UI_UNIT_Y, width, UI_UNIT_Y,
	          &cumap->clipr.xmax, cumap->clipr.xmin, 100.0, 10, 2, "");
	uiDefButF(block, UI_BTYPE_NUM, 0, IFACE_("Max Y "),   0, UI_UNIT_Y, width, UI_UNIT_Y,
	          &cumap->clipr.ymax, cumap->clipr.ymin, 100.0, 10, 2, "");

	UI_block_direction_set(block, UI_DIR_RIGHT);

	return block;
}

/* only for curvemap_tools_dofunc */
enum {
	UICURVE_FUNC_RESET_NEG,
	UICURVE_FUNC_RESET_POS,
	UICURVE_FUNC_RESET_VIEW,
	UICURVE_FUNC_HANDLE_VECTOR,
	UICURVE_FUNC_HANDLE_AUTO,
	UICURVE_FUNC_HANDLE_AUTO_ANIM,
	UICURVE_FUNC_EXTEND_HOZ,
	UICURVE_FUNC_EXTEND_EXP,
};

static void curvemap_tools_dofunc(bContext *C, void *cumap_v, int event)
{
	CurveMapping *cumap = cumap_v;
	CurveMap *cuma = cumap->cm + cumap->cur;

	switch (event) {
		case UICURVE_FUNC_RESET_NEG:
		case UICURVE_FUNC_RESET_POS: /* reset */
			curvemap_reset(cuma, &cumap->clipr, cumap->preset,
			               (event == UICURVE_FUNC_RESET_NEG) ? CURVEMAP_SLOPE_NEGATIVE : CURVEMAP_SLOPE_POSITIVE);
			curvemapping_changed(cumap, false);
			break;
		case UICURVE_FUNC_RESET_VIEW:
			cumap->curr = cumap->clipr;
			break;
		case UICURVE_FUNC_HANDLE_VECTOR: /* set vector */
			curvemap_handle_set(cuma, HD_VECT);
			curvemapping_changed(cumap, false);
			break;
		case UICURVE_FUNC_HANDLE_AUTO: /* set auto */
			curvemap_handle_set(cuma, HD_AUTO);
			curvemapping_changed(cumap, false);
			break;
		case UICURVE_FUNC_HANDLE_AUTO_ANIM: /* set auto-clamped */
			curvemap_handle_set(cuma, HD_AUTO_ANIM);
			curvemapping_changed(cumap, false);
			break;
		case UICURVE_FUNC_EXTEND_HOZ: /* extend horiz */
			cuma->flag &= ~CUMA_EXTEND_EXTRAPOLATE;
			curvemapping_changed(cumap, false);
			break;
		case UICURVE_FUNC_EXTEND_EXP: /* extend extrapolate */
			cuma->flag |= CUMA_EXTEND_EXTRAPOLATE;
			curvemapping_changed(cumap, false);
			break;
	}
	ED_undo_push(C, "CurveMap tools");
	ED_region_tag_redraw(CTX_wm_region(C));
}

static uiBlock *curvemap_tools_func(
        bContext *C, ARegion *ar, CurveMapping *cumap,
        bool show_extend, int reset_mode)
{
	uiBlock *block;
	short yco = 0, menuwidth = 10 * UI_UNIT_X;

	block = UI_block_begin(C, ar, __func__, UI_EMBOSS);
	UI_block_func_butmenu_set(block, curvemap_tools_dofunc, cumap);

	{
		uiDefIconTextBut(
		        block, UI_BTYPE_BUT_MENU, 1, ICON_BLANK1, IFACE_("Reset View"),
		        0, yco -= UI_UNIT_Y, menuwidth, UI_UNIT_Y, NULL, 0.0, 0.0, 0, UICURVE_FUNC_RESET_VIEW, "");
		uiDefIconTextBut(
		        block, UI_BTYPE_BUT_MENU, 1, ICON_BLANK1, IFACE_("Vector Handle"),
		        0, yco -= UI_UNIT_Y, menuwidth, UI_UNIT_Y, NULL, 0.0, 0.0, 0, UICURVE_FUNC_HANDLE_VECTOR, "");
		uiDefIconTextBut(
		        block, UI_BTYPE_BUT_MENU, 1, ICON_BLANK1, IFACE_("Auto Handle"),
		        0, yco -= UI_UNIT_Y, menuwidth, UI_UNIT_Y, NULL, 0.0, 0.0, 0, UICURVE_FUNC_HANDLE_AUTO, "");
		uiDefIconTextBut(
		        block, UI_BTYPE_BUT_MENU, 1, ICON_BLANK1, IFACE_("Auto Clamped Handle"),
		        0, yco -= UI_UNIT_Y, menuwidth, UI_UNIT_Y, NULL, 0.0, 0.0, 0, UICURVE_FUNC_HANDLE_AUTO_ANIM, "");
	}

	if (show_extend) {
		uiDefIconTextBut(
		        block, UI_BTYPE_BUT_MENU, 1, ICON_BLANK1, IFACE_("Extend Horizontal"),
		        0, yco -= UI_UNIT_Y, menuwidth, UI_UNIT_Y, NULL, 0.0, 0.0, 0, UICURVE_FUNC_EXTEND_HOZ, "");
		uiDefIconTextBut(
		        block, UI_BTYPE_BUT_MENU, 1, ICON_BLANK1, IFACE_("Extend Extrapolated"),
		        0, yco -= UI_UNIT_Y, menuwidth, UI_UNIT_Y, NULL, 0.0, 0.0, 0, UICURVE_FUNC_EXTEND_EXP, "");
	}

	{
		uiDefIconTextBut(
		        block, UI_BTYPE_BUT_MENU, 1, ICON_BLANK1, IFACE_("Reset Curve"),
		        0, yco -= UI_UNIT_Y, menuwidth, UI_UNIT_Y, NULL, 0.0, 0.0, 0, reset_mode, "");
	}

	UI_block_direction_set(block, UI_DIR_RIGHT);
	UI_block_bounds_set_text(block, 50);

	return block;
}

static uiBlock *curvemap_tools_posslope_func(bContext *C, ARegion *ar, void *cumap_v)
{
	return curvemap_tools_func(C, ar, cumap_v, true, UICURVE_FUNC_RESET_POS);
}

static uiBlock *curvemap_tools_negslope_func(bContext *C, ARegion *ar, void *cumap_v)
{
	return curvemap_tools_func(C, ar, cumap_v, true, UICURVE_FUNC_RESET_NEG);
}

static uiBlock *curvemap_brush_tools_func(bContext *C, ARegion *ar, void *cumap_v)
{
	return curvemap_tools_func(C, ar, cumap_v, false, UICURVE_FUNC_RESET_NEG);
}

static void curvemap_buttons_redraw(bContext *C, void *UNUSED(arg1), void *UNUSED(arg2))
{
	ED_region_tag_redraw(CTX_wm_region(C));
}

static void curvemap_buttons_update(bContext *C, void *arg1_v, void *cumap_v)
{
	CurveMapping *cumap = cumap_v;
	curvemapping_changed(cumap, true);
	rna_update_cb(C, arg1_v, NULL);
}

static void curvemap_buttons_reset(bContext *C, void *cb_v, void *cumap_v)
{
	CurveMapping *cumap = cumap_v;
	int a;

	cumap->preset = CURVE_PRESET_LINE;
	for (a = 0; a < CM_TOT; a++)
		curvemap_reset(cumap->cm + a, &cumap->clipr, cumap->preset, CURVEMAP_SLOPE_POSITIVE);

	cumap->black[0] = cumap->black[1] = cumap->black[2] = 0.0f;
	cumap->white[0] = cumap->white[1] = cumap->white[2] = 1.0f;
	curvemapping_set_black_white(cumap, NULL, NULL);

	curvemapping_changed(cumap, false);

	rna_update_cb(C, cb_v, NULL);
}

/* still unsure how this call evolves... we use labeltype for defining what curve-channels to show */
static void curvemap_buttons_layout(
        uiLayout *layout, PointerRNA *ptr, char labeltype, bool levels,
        bool brush, bool neg_slope, RNAUpdateCb *cb)
{
	CurveMapping *cumap = ptr->data;
	CurveMap *cm = &cumap->cm[cumap->cur];
	CurveMapPoint *cmp = NULL;
	uiLayout *row, *sub, *split;
	uiBlock *block;
	uiBut *bt;
	float dx = UI_UNIT_X;
	int icon, size;
	int bg = -1, i;

	block = uiLayoutGetBlock(layout);

	/* curve chooser */
	row = uiLayoutRow(layout, false);

	if (labeltype == 'v') {
		/* vector */
		sub = uiLayoutRow(row, true);
		uiLayoutSetAlignment(sub, UI_LAYOUT_ALIGN_LEFT);

		if (cumap->cm[0].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "X", 0, 0, dx, dx, &cumap->cur, 0.0, 0.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
		if (cumap->cm[1].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "Y", 0, 0, dx, dx, &cumap->cur, 0.0, 1.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
		if (cumap->cm[2].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "Z", 0, 0, dx, dx, &cumap->cur, 0.0, 2.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
	}
	else if (labeltype == 'c') {
		/* color */
		sub = uiLayoutRow(row, true);
		uiLayoutSetAlignment(sub, UI_LAYOUT_ALIGN_LEFT);

		if (cumap->cm[3].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "C", 0, 0, dx, dx, &cumap->cur, 0.0, 3.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
		if (cumap->cm[0].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "R", 0, 0, dx, dx, &cumap->cur, 0.0, 0.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
		if (cumap->cm[1].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "G", 0, 0, dx, dx, &cumap->cur, 0.0, 1.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
		if (cumap->cm[2].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "B", 0, 0, dx, dx, &cumap->cur, 0.0, 2.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
	}
	else if (labeltype == 'h') {
		/* HSV */
		sub = uiLayoutRow(row, true);
		uiLayoutSetAlignment(sub, UI_LAYOUT_ALIGN_LEFT);

		if (cumap->cm[0].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "H", 0, 0, dx, dx, &cumap->cur, 0.0, 0.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
		if (cumap->cm[1].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "S", 0, 0, dx, dx, &cumap->cur, 0.0, 1.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
		if (cumap->cm[2].curve) {
			bt = uiDefButI(block, UI_BTYPE_ROW, 0, "V", 0, 0, dx, dx, &cumap->cur, 0.0, 2.0, 0.0, 0.0, "");
			UI_but_func_set(bt, curvemap_buttons_redraw, NULL, NULL);
		}
	}
	else
		uiLayoutSetAlignment(row, UI_LAYOUT_ALIGN_RIGHT);

	if (labeltype == 'h')
		bg = UI_GRAD_H;

	/* operation buttons */
	sub = uiLayoutRow(row, true);

	UI_block_emboss_set(block, UI_EMBOSS_NONE);

	bt = uiDefIconBut(block, UI_BTYPE_BUT, 0, ICON_ZOOM_IN, 0, 0, dx, dx, NULL, 0.0, 0.0, 0.0, 0.0, TIP_("Zoom in"));
	UI_but_func_set(bt, curvemap_buttons_zoom_in, cumap, NULL);

	bt = uiDefIconBut(block, UI_BTYPE_BUT, 0, ICON_ZOOM_OUT, 0, 0, dx, dx, NULL, 0.0, 0.0, 0.0, 0.0, TIP_("Zoom out"));
	UI_but_func_set(bt, curvemap_buttons_zoom_out, cumap, NULL);

	if (brush)
		bt = uiDefIconBlockBut(block, curvemap_brush_tools_func, cumap, 0, ICON_MODIFIER, 0, 0, dx, dx, TIP_("Tools"));
	else if (neg_slope)
		bt = uiDefIconBlockBut(
		        block, curvemap_tools_negslope_func, cumap, 0, ICON_MODIFIER,
		        0, 0, dx, dx, TIP_("Tools"));
	else
		bt = uiDefIconBlockBut(
		        block, curvemap_tools_posslope_func, cumap, 0, ICON_MODIFIER,
		        0, 0, dx, dx, TIP_("Tools"));

	UI_but_funcN_set(bt, rna_update_cb, MEM_dupallocN(cb), NULL);

	icon = (cumap->flag & CUMA_DO_CLIP) ? ICON_CLIPUV_HLT : ICON_CLIPUV_DEHLT;
	bt = uiDefIconBlockBut(block, curvemap_clipping_func, cumap, 0, icon, 0, 0, dx, dx, TIP_("Clipping Options"));
	UI_but_funcN_set(bt, rna_update_cb, MEM_dupallocN(cb), NULL);

	bt = uiDefIconBut(block, UI_BTYPE_BUT, 0, ICON_X, 0, 0, dx, dx, NULL, 0.0, 0.0, 0.0, 0.0, TIP_("Delete points"));
	UI_but_funcN_set(bt, curvemap_buttons_delete, MEM_dupallocN(cb), cumap);

	UI_block_emboss_set(block, UI_EMBOSS);

	UI_block_funcN_set(block, rna_update_cb, MEM_dupallocN(cb), NULL);

	/* curve itself */
	size = uiLayoutGetWidth(layout);
	row = uiLayoutRow(layout, false);
	uiDefBut(block, UI_BTYPE_CURVE, 0, "", 0, 0, size, 8.0f * UI_UNIT_X, cumap, 0.0f, 1.0f, bg, 0, "");

	/* sliders for selected point */
	for (i = 0; i < cm->totpoint; i++) {
		if (cm->curve[i].flag & CUMA_SELECT) {
			cmp = &cm->curve[i];
			break;
		}
	}

	if (cmp) {
		rctf bounds;

		if (cumap->flag & CUMA_DO_CLIP) {
			bounds = cumap->clipr;
		}
		else {
			bounds.xmin = bounds.ymin = -1000.0;
			bounds.xmax = bounds.ymax =  1000.0;
		}

		uiLayoutRow(layout, true);
		UI_block_funcN_set(block, curvemap_buttons_update, MEM_dupallocN(cb), cumap);
		uiDefButF(block, UI_BTYPE_NUM, 0, "X", 0, 2 * UI_UNIT_Y, UI_UNIT_X * 10, UI_UNIT_Y,
		          &cmp->x, bounds.xmin, bounds.xmax, 1, 5, "");
		uiDefButF(block, UI_BTYPE_NUM, 0, "Y", 0, 1 * UI_UNIT_Y, UI_UNIT_X * 10, UI_UNIT_Y,
		          &cmp->y, bounds.ymin, bounds.ymax, 1, 5, "");
	}

	/* black/white levels */
	if (levels) {
		split = uiLayoutSplit(layout, 0.0f, false);
		uiItemR(uiLayoutColumn(split, false), ptr, "black_level", UI_ITEM_R_EXPAND, NULL, ICON_NONE);
		uiItemR(uiLayoutColumn(split, false), ptr, "white_level", UI_ITEM_R_EXPAND, NULL, ICON_NONE);

		uiLayoutRow(layout, false);
		bt = uiDefBut(block, UI_BTYPE_BUT, 0, IFACE_("Reset"), 0, 0, UI_UNIT_X * 10, UI_UNIT_Y, NULL, 0.0f, 0.0f, 0, 0,
		              TIP_("Reset Black/White point and curves"));
		UI_but_funcN_set(bt, curvemap_buttons_reset, MEM_dupallocN(cb), cumap);
	}

	UI_block_funcN_set(block, NULL, NULL, NULL);
}

void uiTemplateCurveMapping(
        uiLayout *layout, PointerRNA *ptr, const char *propname, int type,
        bool levels, bool brush, bool neg_slope)
{
	RNAUpdateCb *cb;
	PropertyRNA *prop = RNA_struct_find_property(ptr, propname);
	PointerRNA cptr;
	ID *id;
	uiBlock *block = uiLayoutGetBlock(layout);

	if (!prop) {
		RNA_warning("curve property not found: %s.%s",
		            RNA_struct_identifier(ptr->type), propname);
		return;
	}

	if (RNA_property_type(prop) != PROP_POINTER) {
		RNA_warning("curve is not a pointer: %s.%s",
		            RNA_struct_identifier(ptr->type), propname);
		return;
	}

	cptr = RNA_property_pointer_get(ptr, prop);
	if (!cptr.data || !RNA_struct_is_a(cptr.type, &RNA_CurveMapping))
		return;

	cb = MEM_callocN(sizeof(RNAUpdateCb), "RNAUpdateCb");
	cb->ptr = *ptr;
	cb->prop = prop;

	id = cptr.id.data;
	UI_block_lock_set(block, (id && ID_IS_LINKED(id)), ERROR_LIBDATA_MESSAGE);

	curvemap_buttons_layout(layout, &cptr, type, levels, brush, neg_slope, cb);

	UI_block_lock_clear(block);

	MEM_freeN(cb);
}

/********************* ColorPicker Template ************************/

#define WHEEL_SIZE  (5 * U.widget_unit)

/* This template now follows User Preference for type - name is not correct anymore... */
void uiTemplateColorPicker(
        uiLayout *layout, PointerRNA *ptr, const char *propname, bool value_slider,
        bool lock, bool lock_luminosity, bool cubic)
{
	PropertyRNA *prop = RNA_struct_find_property(ptr, propname);
	uiBlock *block = uiLayoutGetBlock(layout);
	uiLayout *col, *row;
	uiBut *but = NULL;
	ColorPicker *cpicker = ui_block_colorpicker_create(block);
	float softmin, softmax, step, precision;

	if (!prop) {
		RNA_warning("property not found: %s.%s", RNA_struct_identifier(ptr->type), propname);
		return;
	}

	RNA_property_float_ui_range(ptr, prop, &softmin, &softmax, &step, &precision);

	col = uiLayoutColumn(layout, true);
	row = uiLayoutRow(col, true);

	switch (U.color_picker_type) {
		case USER_CP_SQUARE_SV:
			but = uiDefButR_prop(
			        block, UI_BTYPE_HSVCUBE, 0, "", 0, 0, WHEEL_SIZE, WHEEL_SIZE, ptr, prop,
			        -1, 0.0, 0.0, UI_GRAD_SV, 0, "");
			break;
		case USER_CP_SQUARE_HS:
			but = uiDefButR_prop(
			        block, UI_BTYPE_HSVCUBE, 0, "", 0, 0, WHEEL_SIZE, WHEEL_SIZE, ptr, prop,
			        -1, 0.0, 0.0, UI_GRAD_HS, 0, "");
			break;
		case USER_CP_SQUARE_HV:
			but = uiDefButR_prop(
			        block, UI_BTYPE_HSVCUBE, 0, "", 0, 0, WHEEL_SIZE, WHEEL_SIZE, ptr, prop,
			        -1, 0.0, 0.0, UI_GRAD_HV, 0, "");
			break;

		/* user default */
		case USER_CP_CIRCLE_HSV:
		case USER_CP_CIRCLE_HSL:
		default:
			but = uiDefButR_prop(
			        block, UI_BTYPE_HSVCIRCLE, 0, "", 0, 0, WHEEL_SIZE, WHEEL_SIZE, ptr, prop,
			        -1, 0.0, 0.0, 0, 0, "");
			break;

	}

	but->custom_data = cpicker;

	if (lock) {
		but->flag |= UI_BUT_COLOR_LOCK;
	}

	if (lock_luminosity) {
		float color[4]; /* in case of alpha */
		but->flag |= UI_BUT_VEC_SIZE_LOCK;
		RNA_property_float_get_array(ptr, prop, color);
		but->a2 = len_v3(color);
	}

	if (cubic)
		but->flag |= UI_BUT_COLOR_CUBIC;


	if (value_slider) {
		switch (U.color_picker_type) {
			case USER_CP_CIRCLE_HSL:
				uiItemS(row);
				but = uiDefButR_prop(
				        block, UI_BTYPE_HSVCUBE, 0, "", WHEEL_SIZE + 6, 0, 14, WHEEL_SIZE, ptr, prop,
				        -1, softmin, softmax, UI_GRAD_L_ALT, 0, "");
				break;
			case USER_CP_SQUARE_SV:
				uiItemS(col);
				but = uiDefButR_prop(
				        block, UI_BTYPE_HSVCUBE, 0, "", 0, 4, WHEEL_SIZE, 18, ptr, prop,
				        -1, softmin, softmax, UI_GRAD_SV + 3, 0, "");
				break;
			case USER_CP_SQUARE_HS:
				uiItemS(col);
				but = uiDefButR_prop(
				        block, UI_BTYPE_HSVCUBE, 0, "", 0, 4, WHEEL_SIZE, 18, ptr, prop,
				        -1, softmin, softmax, UI_GRAD_HS + 3, 0, "");
				break;
			case USER_CP_SQUARE_HV:
				uiItemS(col);
				but = uiDefButR_prop(
				        block, UI_BTYPE_HSVCUBE, 0, "", 0, 4, WHEEL_SIZE, 18, ptr, prop,
				        -1, softmin, softmax, UI_GRAD_HV + 3, 0, "");
				break;

			/* user default */
			case USER_CP_CIRCLE_HSV:
			default:
				uiItemS(row);
				but = uiDefButR_prop(
				        block, UI_BTYPE_HSVCUBE, 0, "", WHEEL_SIZE + 6, 0, 14, WHEEL_SIZE, ptr, prop,
				        -1, softmin, softmax, UI_GRAD_V_ALT, 0, "");
				break;
		}

		but->custom_data = cpicker;
	}
}

void uiTemplatePalette(uiLayout *layout, PointerRNA *ptr, const char *propname, bool UNUSED(colors))
{
	PropertyRNA *prop = RNA_struct_find_property(ptr, propname);
	PointerRNA cptr;
	Palette *palette;
	PaletteColor *color;
	uiBlock *block;
	uiLayout *col;
	int row_cols = 0, col_id = 0;
	int cols_per_row = MAX2(uiLayoutGetWidth(layout) / UI_UNIT_X, 1);

	if (!prop) {
		RNA_warning("property not found: %s.%s", RNA_struct_identifier(ptr->type), propname);
		return;
	}

	cptr = RNA_property_pointer_get(ptr, prop);
	if (!cptr.data || !RNA_struct_is_a(cptr.type, &RNA_Palette))
		return;

	block = uiLayoutGetBlock(layout);

	palette = cptr.data;

	color = palette->colors.first;

	col = uiLayoutColumn(layout, true);
	uiLayoutRow(col, true);
	uiDefIconButO(block, UI_BTYPE_BUT, "PALETTE_OT_color_add", WM_OP_INVOKE_DEFAULT, ICON_ZOOMIN, 0, 0, UI_UNIT_X, UI_UNIT_Y, NULL);
	uiDefIconButO(block, UI_BTYPE_BUT, "PALETTE_OT_color_delete", WM_OP_INVOKE_DEFAULT, ICON_ZOOMOUT, 0, 0, UI_UNIT_X, UI_UNIT_Y, NULL);

	col = uiLayoutColumn(layout, true);
	uiLayoutRow(col, true);

	for (; color; color = color->next) {
		PointerRNA color_ptr;

		if (row_cols >= cols_per_row) {
			uiLayoutRow(col, true);
			row_cols = 0;
		}

		RNA_pointer_create(&palette->id, &RNA_PaletteColor, color, &color_ptr);
		uiDefButR(
		        block, UI_BTYPE_COLOR, 0, "", 0, 0, UI_UNIT_X, UI_UNIT_Y, &color_ptr, "color", -1, 0.0, 1.0,
		        UI_PALETTE_COLOR, col_id, "");
		row_cols++;
		col_id++;
	}
}


/********************* Layer Buttons Template ************************/

static void handle_layer_buttons(bContext *C, void *arg1, void *arg2)
{
	uiBut *but = arg1;
	int cur = GET_INT_FROM_POINTER(arg2);
	wmWindow *win = CTX_wm_window(C);
	int i, tot, shift = win->eventstate->shift;

	if (!shift) {
		tot = RNA_property_array_length(&but->rnapoin, but->rnaprop);

		/* Normally clicking only selects one layer */
		RNA_property_boolean_set_index(&but->rnapoin, but->rnaprop, cur, true);
		for (i = 0; i < tot; ++i) {
			if (i != cur)
				RNA_property_boolean_set_index(&but->rnapoin, but->rnaprop, i, false);
		}
	}

	/* view3d layer change should update depsgraph (invisible object changed maybe) */
	/* see view3d_header.c */
}

/**
 * \todo for now, grouping of layers is determined by dividing up the length of
 * the array of layer bitflags
 */
void uiTemplateLayers(
        uiLayout *layout, PointerRNA *ptr, const char *propname,
        PointerRNA *used_ptr, const char *used_propname, int active_layer)
{
	uiLayout *uRow, *uCol;
	PropertyRNA *prop, *used_prop = NULL;
	int groups, cols, layers;
	int group, col, layer, row;
	int cols_per_group = 5;

	prop = RNA_struct_find_property(ptr, propname);
	if (!prop) {
		RNA_warning("layers property not found: %s.%s", RNA_struct_identifier(ptr->type), propname);
		return;
	}

	/* the number of layers determines the way we group them
	 *	- we want 2 rows only (for now)
	 *	- the number of columns (cols) is the total number of buttons per row
	 *	  the 'remainder' is added to this, as it will be ok to have first row slightly wider if need be
	 *	- for now, only split into groups if group will have at least 5 items
	 */
	layers = RNA_property_array_length(ptr, prop);
	cols = (layers / 2) + (layers % 2);
	groups = ((cols / 2) < cols_per_group) ? (1) : (cols / cols_per_group);

	if (used_ptr && used_propname) {
		used_prop = RNA_struct_find_property(used_ptr, used_propname);
		if (!used_prop) {
			RNA_warning("used layers property not found: %s.%s", RNA_struct_identifier(ptr->type), used_propname);
			return;
		}

		if (RNA_property_array_length(used_ptr, used_prop) < layers)
			used_prop = NULL;
	}

	/* layers are laid out going across rows, with the columns being divided into groups */

	for (group = 0; group < groups; group++) {
		uCol = uiLayoutColumn(layout, true);

		for (row = 0; row < 2; row++) {
			uiBlock *block;
			uiBut *but;

			uRow = uiLayoutRow(uCol, true);
			block = uiLayoutGetBlock(uRow);
			layer = groups * cols_per_group * row + cols_per_group * group;

			/* add layers as toggle buts */
			for (col = 0; (col < cols_per_group) && (layer < layers); col++, layer++) {
				int icon = 0;
				int butlay = 1 << layer;

				if (active_layer & butlay)
					icon = ICON_LAYER_ACTIVE;
				else if (used_prop && RNA_property_boolean_get_index(used_ptr, used_prop, layer))
					icon = ICON_LAYER_USED;

				but = uiDefAutoButR(block, ptr, prop, layer, "", icon, 0, 0, UI_UNIT_X / 2, UI_UNIT_Y / 2);
				UI_but_func_set(but, handle_layer_buttons, but, SET_INT_IN_POINTER(layer));
				but->type = UI_BTYPE_TOGGLE;
			}
		}
	}
}

/************************* List Template **************************/
static void uilist_draw_item_default(
        struct uiList *ui_list, struct bContext *UNUSED(C), struct uiLayout *layout,
        struct PointerRNA *UNUSED(dataptr), struct PointerRNA *itemptr, int icon,
        struct PointerRNA *UNUSED(active_dataptr), const char *UNUSED(active_propname),
        int UNUSED(index), int UNUSED(flt_flag))
{
	PropertyRNA *nameprop = RNA_struct_name_property(itemptr->type);

	/* Simplest one! */
	switch (ui_list->layout_type) {
		case UILST_LAYOUT_GRID:
			uiItemL(layout, "", icon);
			break;
		case UILST_LAYOUT_DEFAULT:
		case UILST_LAYOUT_COMPACT:
		default:
			if (nameprop) {
				uiItemFullR(layout, itemptr, nameprop, RNA_NO_INDEX, 0, UI_ITEM_R_NO_BG, "", icon);
			}
			else {
				uiItemL(layout, "", icon);
			}
			break;
	}
}

static void uilist_draw_filter_default(struct uiList *ui_list, struct bContext *UNUSED(C), struct uiLayout *layout)
{
	PointerRNA listptr;
	uiLayout *row, *subrow;

	RNA_pointer_create(NULL, &RNA_UIList, ui_list, &listptr);

	row = uiLayoutRow(layout, false);

	subrow = uiLayoutRow(row, true);
	uiItemR(subrow, &listptr, "filter_name", 0, "", ICON_NONE);
	uiItemR(subrow, &listptr, "use_filter_invert", UI_ITEM_R_TOGGLE | UI_ITEM_R_ICON_ONLY, "",
	        (ui_list->filter_flag & UILST_FLT_EXCLUDE) ? ICON_ZOOM_OUT : ICON_ZOOM_IN);

	subrow = uiLayoutRow(row, true);
	uiItemR(subrow, &listptr, "use_filter_sort_alpha", UI_ITEM_R_TOGGLE | UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
	uiItemR(subrow, &listptr, "use_filter_sort_reverse", UI_ITEM_R_TOGGLE | UI_ITEM_R_ICON_ONLY, "",
	        (ui_list->filter_sort_flag & UILST_FLT_SORT_REVERSE) ? ICON_TRIA_UP : ICON_TRIA_DOWN);
}

typedef struct {
	char name[MAX_IDPROP_NAME];
	int org_idx;
} StringCmp;

static int cmpstringp(const void *p1, const void *p2)
{
	/* Case-insensitive comparison. */
	return BLI_strcasecmp(((StringCmp *) p1)->name, ((StringCmp *) p2)->name);
}

static void uilist_filter_items_default(
        struct uiList *ui_list, struct bContext *UNUSED(C), struct PointerRNA *dataptr,
        const char *propname)
{
	uiListDyn *dyn_data = ui_list->dyn_data;
	PropertyRNA *prop = RNA_struct_find_property(dataptr, propname);

	const char *filter_raw = ui_list->filter_byname;
	char *filter = (char *)filter_raw, filter_buff[32], *filter_dyn = NULL;
	const bool filter_exclude = (ui_list->filter_flag & UILST_FLT_EXCLUDE) != 0;
	const bool order_by_name = (ui_list->filter_sort_flag & UILST_FLT_SORT_ALPHA) != 0;
	int len = RNA_property_collection_length(dataptr, prop);

	dyn_data->items_shown = dyn_data->items_len = len;

	if (len && (order_by_name || filter_raw[0])) {
		StringCmp *names = NULL;
		int order_idx = 0, i = 0;

		if (order_by_name) {
			names = MEM_callocN(sizeof(StringCmp) * len, "StringCmp");
		}
		if (filter_raw[0]) {
			size_t slen = strlen(filter_raw);

			dyn_data->items_filter_flags = MEM_callocN(sizeof(int) * len, "items_filter_flags");
			dyn_data->items_shown = 0;

			/* Implicitly add heading/trailing wildcards if needed. */
			if (slen + 3 <= sizeof(filter_buff)) {
				filter = filter_buff;
			}
			else {
				filter = filter_dyn = MEM_mallocN((slen + 3) * sizeof(char), "filter_dyn");
			}
			BLI_strncpy_ensure_pad(filter, filter_raw, '*', slen + 3);
		}

		RNA_PROP_BEGIN (dataptr, itemptr, prop)
		{
			char *namebuf;
			const char *name;
			bool do_order = false;

			namebuf = RNA_struct_name_get_alloc(&itemptr, NULL, 0, NULL);
			name = namebuf ? namebuf : "";

			if (filter[0]) {
				/* Case-insensitive! */
				if (fnmatch(filter, name, FNM_CASEFOLD) == 0) {
					dyn_data->items_filter_flags[i] = UILST_FLT_ITEM;
					if (!filter_exclude) {
						dyn_data->items_shown++;
						do_order = order_by_name;
					}
					//printf("%s: '%s' matches '%s'\n", __func__, name, filter);
				}
				else if (filter_exclude) {
					dyn_data->items_shown++;
					do_order = order_by_name;
				}
			}
			else {
				do_order = order_by_name;
			}

			if (do_order) {
				names[order_idx].org_idx = order_idx;
				BLI_strncpy(names[order_idx++].name, name, MAX_IDPROP_NAME);
			}

			/* free name */
			if (namebuf) {
				MEM_freeN(namebuf);
			}
			i++;
		}
		RNA_PROP_END;

		if (order_by_name) {
			int new_idx;
			/* note: order_idx equals either to ui_list->items_len if no filtering done,
			 *       or to ui_list->items_shown if filter is enabled,
			 *       or to (ui_list->items_len - ui_list->items_shown) if filtered items are excluded.
			 *       This way, we only sort items we actually intend to draw!
			 */
			qsort(names, order_idx, sizeof(StringCmp), cmpstringp);

			dyn_data->items_filter_neworder = MEM_mallocN(sizeof(int) * order_idx, "items_filter_neworder");
			for (new_idx = 0; new_idx < order_idx; new_idx++) {
				dyn_data->items_filter_neworder[names[new_idx].org_idx] = new_idx;
			}
		}

		if (filter_dyn) {
			MEM_freeN(filter_dyn);
		}
		if (names) {
			MEM_freeN(names);
		}
	}
}

typedef struct {
	PointerRNA item;
	int org_idx;
	int flt_flag;
} _uilist_item;

typedef struct {
	int visual_items;  /* Visual number of items (i.e. number of items we have room to display). */
	int start_idx;     /* Index of first item to display. */
	int end_idx;       /* Index of last item to display + 1. */
} uiListLayoutdata;

static void uilist_prepare(
        uiList *ui_list, int len, int activei, int rows, int maxrows, int columns,
        uiListLayoutdata *layoutdata)
{
	uiListDyn *dyn_data = ui_list->dyn_data;
	int activei_row, max_scroll;
	const bool use_auto_size = (ui_list->list_grip < (rows - UI_LIST_AUTO_SIZE_THRESHOLD));

	/* default rows */
	if (rows <= 0)
		rows = 5;
	dyn_data->visual_height_min = rows;
	if (maxrows < rows)
		maxrows = max_ii(rows, 5);
	if (columns <= 0)
		columns = 9;

	if (columns > 1) {
		dyn_data->height = (int)ceil((double)len / (double)columns);
		activei_row = (int)floor((double)activei / (double)columns);
	}
	else {
		dyn_data->height = len;
		activei_row = activei;
	}

	if (!use_auto_size) {
		/* No auto-size, yet we clamp at min size! */
		maxrows = rows = max_ii(ui_list->list_grip, rows);
	}
	else if ((rows != maxrows) && (dyn_data->height > rows)) {
		/* Expand size if needed and possible. */
		rows = min_ii(dyn_data->height, maxrows);
	}

	/* If list length changes or list is tagged to check this, and active is out of view, scroll to it .*/
	if (ui_list->list_last_len != len || ui_list->flag & UILST_SCROLL_TO_ACTIVE_ITEM) {
		if (activei_row < ui_list->list_scroll) {
			ui_list->list_scroll = activei_row;
		}
		else if (activei_row >= ui_list->list_scroll + rows) {
			ui_list->list_scroll = activei_row - rows + 1;
		}
		ui_list->flag &= ~UILST_SCROLL_TO_ACTIVE_ITEM;
	}

	max_scroll = max_ii(0, dyn_data->height - rows);
	CLAMP(ui_list->list_scroll, 0, max_scroll);
	ui_list->list_last_len = len;
	dyn_data->visual_height = rows;
	layoutdata->visual_items = rows * columns;
	layoutdata->start_idx = ui_list->list_scroll * columns;
	layoutdata->end_idx = min_ii(layoutdata->start_idx + rows * columns, len);
}

static void uilist_resize_update_cb(bContext *C, void *arg1, void *UNUSED(arg2))
{
	uiList *ui_list = arg1;
	uiListDyn *dyn_data = ui_list->dyn_data;

	/* This way we get diff in number of additional items to show (positive) or hide (negative). */
	const int diff = round_fl_to_int((float)(dyn_data->resize - dyn_data->resize_prev) / (float)UI_UNIT_Y);

	if (diff != 0) {
		ui_list->list_grip += diff;
		dyn_data->resize_prev += diff * UI_UNIT_Y;
		ui_list->flag |= UILST_SCROLL_TO_ACTIVE_ITEM;
	}

	/* In case uilist is in popup, we need special refreshing */
	ED_region_tag_refresh_ui(CTX_wm_menu(C));
}

static void *uilist_item_use_dynamic_tooltip(PointerRNA *itemptr, const char *propname)
{
	if (propname && propname[0] && itemptr && itemptr->data) {
		PropertyRNA *prop = RNA_struct_find_property(itemptr, propname);

		if (prop && (RNA_property_type(prop) == PROP_STRING)) {
			return RNA_property_string_get_alloc(itemptr, prop, NULL, 0, NULL);
		}
	}
	return NULL;
}

static char *uilist_item_tooltip_func(bContext *UNUSED(C), void *argN, const char *tip)
{
	char *dyn_tooltip = argN;
	return BLI_sprintfN("%s - %s", tip, dyn_tooltip);
}

void uiTemplateList(
        uiLayout *layout, bContext *C, const char *listtype_name, const char *list_id,
        PointerRNA *dataptr, const char *propname, PointerRNA *active_dataptr, const char *active_propname,
        const char *item_dyntip_propname, int rows, int maxrows, int layout_type, int columns)
{
	uiListType *ui_list_type;
	uiList *ui_list = NULL;
	uiListDyn *dyn_data;
	ARegion *ar;
	uiListDrawItemFunc draw_item;
	uiListDrawFilterFunc draw_filter;
	uiListFilterItemsFunc filter_items;

	PropertyRNA *prop = NULL, *activeprop;
	PropertyType type, activetype;
	_uilist_item *items_ptr = NULL;
	StructRNA *ptype;
	uiLayout *glob = NULL, *box, *row, *col, *subrow, *sub, *overlap;
	uiBlock *block, *subblock;
	uiBut *but;

	uiListLayoutdata layoutdata;
	char ui_list_id[UI_MAX_NAME_STR];
	char numstr[32];
	int rnaicon = ICON_NONE, icon = ICON_NONE;
	int i = 0, activei = 0;
	int len = 0;

	/* validate arguments */
	/* Forbid default UI_UL_DEFAULT_CLASS_NAME list class without a custom list_id! */
	if (STREQ(UI_UL_DEFAULT_CLASS_NAME, listtype_name) && !(list_id && list_id[0])) {
		RNA_warning("template_list using default '%s' UIList class must provide a custom list_id",
		            UI_UL_DEFAULT_CLASS_NAME);
		return;
	}

	block = uiLayoutGetBlock(layout);

	if (!active_dataptr->data) {
		RNA_warning("No active data");
		return;
	}

	if (dataptr->data) {
		prop = RNA_struct_find_property(dataptr, propname);
		if (!prop) {
			RNA_warning("Property not found: %s.%s", RNA_struct_identifier(dataptr->type), propname);
			return;
		}
	}

	activeprop = RNA_struct_find_property(active_dataptr, active_propname);
	if (!activeprop) {
		RNA_warning("Property not found: %s.%s", RNA_struct_identifier(active_dataptr->type), active_propname);
		return;
	}

	if (prop) {
		type = RNA_property_type(prop);
		if (type != PROP_COLLECTION) {
			RNA_warning("Expected a collection data property");
			return;
		}
	}

	activetype = RNA_property_type(activeprop);
	if (activetype != PROP_INT) {
		RNA_warning("Expected an integer active data property");
		return;
	}

	/* get icon */
	if (dataptr->data && prop) {
		ptype = RNA_property_pointer_type(dataptr, prop);
		rnaicon = RNA_struct_ui_icon(ptype);
	}

	/* get active data */
	activei = RNA_property_int_get(active_dataptr, activeprop);

	/* Find the uiList type. */
	ui_list_type = WM_uilisttype_find(listtype_name, false);

	if (ui_list_type == NULL) {
		RNA_warning("List type %s not found", listtype_name);
		return;
	}

	draw_item = ui_list_type->draw_item ? ui_list_type->draw_item : uilist_draw_item_default;
	draw_filter = ui_list_type->draw_filter ? ui_list_type->draw_filter : uilist_draw_filter_default;
	filter_items = ui_list_type->filter_items ? ui_list_type->filter_items : uilist_filter_items_default;

	/* Find or add the uiList to the current Region. */
	/* We tag the list id with the list type... */
	BLI_snprintf(ui_list_id, sizeof(ui_list_id), "%s_%s", ui_list_type->idname, list_id ? list_id : "");

	/* Allows to work in popups. */
	ar = CTX_wm_menu(C);
	if (ar == NULL) {
		ar = CTX_wm_region(C);
	}
	ui_list = BLI_findstring(&ar->ui_lists, ui_list_id, offsetof(uiList, list_id));

	if (!ui_list) {
		ui_list = MEM_callocN(sizeof(uiList), "uiList");
		BLI_strncpy(ui_list->list_id, ui_list_id, sizeof(ui_list->list_id));
		BLI_addtail(&ar->ui_lists, ui_list);
		ui_list->list_grip = -UI_LIST_AUTO_SIZE_THRESHOLD;  /* Force auto size by default. */
	}

	if (!ui_list->dyn_data) {
		ui_list->dyn_data = MEM_callocN(sizeof(uiListDyn), "uiList.dyn_data");
	}
	dyn_data = ui_list->dyn_data;

	/* Because we can't actually pass type across save&load... */
	ui_list->type = ui_list_type;
	ui_list->layout_type = layout_type;

	/* Reset filtering data. */
	MEM_SAFE_FREE(dyn_data->items_filter_flags);
	MEM_SAFE_FREE(dyn_data->items_filter_neworder);
	dyn_data->items_len = dyn_data->items_shown = -1;

	/* When active item changed since last draw, scroll to it. */
	if (activei != ui_list->list_last_activei) {
		ui_list->flag |= UILST_SCROLL_TO_ACTIVE_ITEM;
		ui_list->list_last_activei = activei;
	}

	/* Filter list items! (not for compact layout, though) */
	if (dataptr->data && prop) {
		const int filter_exclude = ui_list->filter_flag & UILST_FLT_EXCLUDE;
		const bool order_reverse = (ui_list->filter_sort_flag & UILST_FLT_SORT_REVERSE) != 0;
		int items_shown, idx = 0;
#if 0
		int prev_ii = -1, prev_i;
#endif

		if (layout_type == UILST_LAYOUT_COMPACT) {
			dyn_data->items_len = dyn_data->items_shown = RNA_property_collection_length(dataptr, prop);
		}
		else {
			//printf("%s: filtering...\n", __func__);
			filter_items(ui_list, C, dataptr, propname);
			//printf("%s: filtering done.\n", __func__);
		}

		items_shown = dyn_data->items_shown;
		if (items_shown >= 0) {
			bool activei_mapping_pending = true;
			items_ptr = MEM_mallocN(sizeof(_uilist_item) * items_shown, __func__);
			//printf("%s: items shown: %d.\n", __func__, items_shown);
			RNA_PROP_BEGIN (dataptr, itemptr, prop)
			{
				if (!dyn_data->items_filter_flags ||
				    ((dyn_data->items_filter_flags[i] & UILST_FLT_ITEM) ^ filter_exclude))
				{
					int ii;
					if (dyn_data->items_filter_neworder) {
						ii = dyn_data->items_filter_neworder[idx++];
						ii = order_reverse ? items_shown - ii - 1 : ii;
					}
					else {
						ii = order_reverse ? items_shown - ++idx : idx++;
					}
					//printf("%s: ii: %d\n", __func__, ii);
					items_ptr[ii].item = itemptr;
					items_ptr[ii].org_idx = i;
					items_ptr[ii].flt_flag = dyn_data->items_filter_flags ? dyn_data->items_filter_flags[i] : 0;

					if (activei_mapping_pending && activei == i) {
						activei = ii;
						/* So that we do not map again activei! */
						activei_mapping_pending = false;
					}
#if 0 /* For now, do not alter active element, even if it will be hidden... */
					else if (activei < i) {
						/* We do not want an active but invisible item!
						 * Only exception is when all items are filtered out...
						 */
						if (prev_ii >= 0) {
							activei = prev_ii;
							RNA_property_int_set(active_dataptr, activeprop, prev_i);
						}
						else {
							activei = ii;
							RNA_property_int_set(active_dataptr, activeprop, i);
						}
					}
					prev_i = i;
					prev_ii = ii;
#endif
				}
				i++;
			}
			RNA_PROP_END;

			if (activei_mapping_pending) {
				/* No active item found, set to 'invalid' -1 value... */
				activei = -1;
			}
		}
		if (dyn_data->items_shown >= 0) {
			len = dyn_data->items_shown;
		}
		else {
			len = dyn_data->items_len;
		}
	}

	switch (layout_type) {
		case UILST_LAYOUT_DEFAULT:
			/* layout */
			box = uiLayoutListBox(layout, ui_list, dataptr, prop, active_dataptr, activeprop);
			glob = uiLayoutColumn(box, true);
			row = uiLayoutRow(glob, false);
			col = uiLayoutColumn(row, true);

			/* init numbers */
			uilist_prepare(ui_list, len, activei, rows, maxrows, 1, &layoutdata);

			if (dataptr->data && prop) {
				/* create list items */
				for (i = layoutdata.start_idx; i < layoutdata.end_idx; i++) {
					PointerRNA *itemptr = &items_ptr[i].item;
					void *dyntip_data;
					int org_i = items_ptr[i].org_idx;
					int flt_flag = items_ptr[i].flt_flag;
					subblock = uiLayoutGetBlock(col);

					overlap = uiLayoutOverlap(col);

					UI_block_flag_enable(subblock, UI_BLOCK_LIST_ITEM);

					/* list item behind label & other buttons */
					sub = uiLayoutRow(overlap, false);

					but = uiDefButR_prop(
					        subblock, UI_BTYPE_LISTROW, 0, "", 0, 0, UI_UNIT_X * 10, UI_UNIT_Y,
					        active_dataptr, activeprop, 0, 0, org_i, 0, 0,
					        TIP_("Double click to rename"));
					if ((dyntip_data = uilist_item_use_dynamic_tooltip(itemptr, item_dyntip_propname))) {
						UI_but_func_tooltip_set(but, uilist_item_tooltip_func, dyntip_data);
					}

					sub = uiLayoutRow(overlap, false);

					icon = UI_rnaptr_icon_get(C, itemptr, rnaicon, false);
					if (icon == ICON_DOT)
						icon = ICON_NONE;
					draw_item(ui_list, C, sub, dataptr, itemptr, icon, active_dataptr, active_propname,
					          org_i, flt_flag);

					/* If we are "drawing" active item, set all labels as active. */
					if (i == activei) {
						ui_layout_list_set_labels_active(sub);
					}

					UI_block_flag_disable(subblock, UI_BLOCK_LIST_ITEM);
				}
			}

			/* add dummy buttons to fill space */
			for (; i < layoutdata.start_idx + layoutdata.visual_items; i++) {
				uiItemL(col, "", ICON_NONE);
			}

			/* add scrollbar */
			if (len > layoutdata.visual_items) {
				col = uiLayoutColumn(row, false);
				uiDefButI(block, UI_BTYPE_SCROLL, 0, "", 0, 0, UI_UNIT_X * 0.75, UI_UNIT_Y * dyn_data->visual_height,
				          &ui_list->list_scroll, 0, dyn_data->height - dyn_data->visual_height,
				          dyn_data->visual_height, 0, "");
			}
			break;
		case UILST_LAYOUT_COMPACT:
			row = uiLayoutRow(layout, true);

			if ((dataptr->data && prop) && (dyn_data->items_shown > 0) &&
			    (activei >= 0) && (activei < dyn_data->items_shown))
			{
				PointerRNA *itemptr = &items_ptr[activei].item;
				int org_i = items_ptr[activei].org_idx;

				icon = UI_rnaptr_icon_get(C, itemptr, rnaicon, false);
				if (icon == ICON_DOT)
					icon = ICON_NONE;
				draw_item(ui_list, C, row, dataptr, itemptr, icon, active_dataptr, active_propname, org_i, 0);
			}
			/* if list is empty, add in dummy button */
			else {
				uiItemL(row, "", ICON_NONE);
			}

			/* next/prev button */
			BLI_snprintf(numstr, sizeof(numstr), "%d :", dyn_data->items_shown);
			but = uiDefIconTextButR_prop(
			        block, UI_BTYPE_NUM, 0, 0, numstr, 0, 0, UI_UNIT_X * 5, UI_UNIT_Y,
			        active_dataptr, activeprop, 0, 0, 0, 0, 0, "");
			if (dyn_data->items_shown == 0)
				UI_but_flag_enable(but, UI_BUT_DISABLED);
			break;
		case UILST_LAYOUT_GRID:
			box = uiLayoutListBox(layout, ui_list, dataptr, prop, active_dataptr, activeprop);
			glob = uiLayoutColumn(box, true);
			row = uiLayoutRow(glob, false);
			col = uiLayoutColumn(row, true);
			subrow = NULL;  /* Quite gcc warning! */

			uilist_prepare(ui_list, len, activei, rows, maxrows, columns, &layoutdata);

			if (dataptr->data && prop) {
				/* create list items */
				for (i = layoutdata.start_idx; i < layoutdata.end_idx; i++) {
					PointerRNA *itemptr = &items_ptr[i].item;
					int org_i = items_ptr[i].org_idx;
					int flt_flag = items_ptr[i].flt_flag;

					/* create button */
					if (!(i % columns))
						subrow = uiLayoutRow(col, false);

					subblock = uiLayoutGetBlock(subrow);
					overlap = uiLayoutOverlap(subrow);

					UI_block_flag_enable(subblock, UI_BLOCK_LIST_ITEM);

					/* list item behind label & other buttons */
					sub = uiLayoutRow(overlap, false);

					but = uiDefButR_prop(subblock, UI_BTYPE_LISTROW, 0, "", 0, 0, UI_UNIT_X * 10, UI_UNIT_Y,
					                     active_dataptr, activeprop, 0, 0, org_i, 0, 0, NULL);
					UI_but_drawflag_enable(but, UI_BUT_NO_TOOLTIP);

					sub = uiLayoutRow(overlap, false);

					icon = UI_rnaptr_icon_get(C, itemptr, rnaicon, false);
					draw_item(ui_list, C, sub, dataptr, itemptr, icon, active_dataptr, active_propname,
					          org_i, flt_flag);

					/* If we are "drawing" active item, set all labels as active. */
					if (i == activei) {
						ui_layout_list_set_labels_active(sub);
					}

					UI_block_flag_disable(subblock, UI_BLOCK_LIST_ITEM);
				}
			}

			/* add dummy buttons to fill space */
			for (; i < layoutdata.start_idx + layoutdata.visual_items; i++) {
				if (!(i % columns)) {
					subrow = uiLayoutRow(col, false);
				}
				uiItemL(subrow, "", ICON_NONE);
			}

			/* add scrollbar */
			if (len > layoutdata.visual_items) {
				/* col = */ uiLayoutColumn(row, false);
				uiDefButI(block, UI_BTYPE_SCROLL, 0, "", 0, 0, UI_UNIT_X * 0.75, UI_UNIT_Y * dyn_data->visual_height,
				          &ui_list->list_scroll, 0, dyn_data->height - dyn_data->visual_height,
				          dyn_data->visual_height, 0, "");
			}
			break;
	}

	if (glob) {
		/* About UI_BTYPE_GRIP drag-resize:
		 * We can't directly use results from a grip button, since we have a rather complex behavior here
		 * (sizing by discrete steps and, overall, autosize feature).
		 * Since we *never* know whether we are grip-resizing or not (because there is no callback for when a
		 * button enters/leaves its "edit mode"), we use the fact that grip-controlled value (dyn_data->resize)
		 * is completely handled by the grip during the grab resize, so settings its value here has no effect
		 * at all.
		 * It is only meaningful when we are not resizing, in which case this gives us the correct "init drag" value.
		 * Note we cannot affect dyn_data->resize_prev here, since this value is not controlled by the grip!
		 */
		dyn_data->resize = dyn_data->resize_prev + (dyn_data->visual_height - ui_list->list_grip) * UI_UNIT_Y;

		row = uiLayoutRow(glob, true);
		subblock = uiLayoutGetBlock(row);
		UI_block_emboss_set(subblock, UI_EMBOSS_NONE);

		if (ui_list->filter_flag & UILST_FLT_SHOW) {
			but = uiDefIconButBitI(subblock, UI_BTYPE_TOGGLE, UILST_FLT_SHOW, 0, ICON_DISCLOSURE_TRI_DOWN, 0, 0,
			                       UI_UNIT_X, UI_UNIT_Y * 0.5f, &(ui_list->filter_flag), 0, 0, 0, 0,
			                       TIP_("Hide filtering options"));
			UI_but_flag_disable(but, UI_BUT_UNDO); /* skip undo on screen buttons */

			but = uiDefIconButI(subblock, UI_BTYPE_GRIP, 0, ICON_GRIP, 0, 0, UI_UNIT_X * 10.0f, UI_UNIT_Y * 0.5f,
			                    &dyn_data->resize, 0.0, 0.0, 0, 0, "");
			UI_but_func_set(but, uilist_resize_update_cb, ui_list, NULL);

			UI_block_emboss_set(subblock, UI_EMBOSS);

			col = uiLayoutColumn(glob, false);
			subblock = uiLayoutGetBlock(col);
			uiDefBut(subblock, UI_BTYPE_SEPR, 0, "", 0, 0, UI_UNIT_X, UI_UNIT_Y * 0.05f, NULL, 0.0, 0.0, 0, 0, "");

			draw_filter(ui_list, C, col);
		}
		else {
			but = uiDefIconButBitI(subblock, UI_BTYPE_TOGGLE, UILST_FLT_SHOW, 0, ICON_DISCLOSURE_TRI_RIGHT, 0, 0,
			                       UI_UNIT_X, UI_UNIT_Y * 0.5f, &(ui_list->filter_flag), 0, 0, 0, 0,
			                       TIP_("Show filtering options"));
			UI_but_flag_disable(but, UI_BUT_UNDO); /* skip undo on screen buttons */

			but = uiDefIconButI(subblock, UI_BTYPE_GRIP, 0, ICON_GRIP, 0, 0, UI_UNIT_X * 10.0f, UI_UNIT_Y * 0.5f,
			                    &dyn_data->resize, 0.0, 0.0, 0, 0, "");
			UI_but_func_set(but, uilist_resize_update_cb, ui_list, NULL);

			UI_block_emboss_set(subblock, UI_EMBOSS);
		}
	}

	if (items_ptr) {
		MEM_freeN(items_ptr);
	}
}

/************************* Operator Search Template **************************/

static void operator_call_cb(bContext *C, void *UNUSED(arg1), void *arg2)
{
	wmOperatorType *ot = arg2;

	if (ot)
		WM_operator_name_call_ptr(C, ot, WM_OP_INVOKE_DEFAULT, NULL);
}

static bool has_word_prefix(const char *haystack, const char *needle, size_t needle_len)
{
	const char *match = BLI_strncasestr(haystack, needle, needle_len);
	if (match) {
		if ((match == haystack) || (*(match - 1) == ' ') || ispunct(*(match - 1))) {
			return true;
		}
		else {
			return has_word_prefix(match + 1, needle, needle_len);
		}
	}
	else {
		return false;
	}
}

static void operator_search_cb(const bContext *C, void *UNUSED(arg), const char *str, uiSearchItems *items)
{
	GHashIterator iter;
	const size_t str_len = strlen(str);
	const int words_max = (str_len / 2) + 1;
	int (*words)[2] = BLI_array_alloca(words, words_max);

	const int words_len = BLI_string_find_split_words(str, str_len, ' ', words, words_max);

	for (WM_operatortype_iter(&iter); !BLI_ghashIterator_done(&iter); BLI_ghashIterator_step(&iter)) {
		wmOperatorType *ot = BLI_ghashIterator_getValue(&iter);
		const char *ot_ui_name = CTX_IFACE_(ot->translation_context, ot->name);
		int index;

		if ((ot->flag & OPTYPE_INTERNAL) && (G.debug & G_DEBUG_WM) == 0)
			continue;

		/* match name against all search words */
		for (index = 0; index < words_len; index++) {
			if (!has_word_prefix(ot_ui_name, str + words[index][0], words[index][1])) {
				break;
			}
		}

		if (index == words_len) {
			if (WM_operator_poll((bContext *)C, ot)) {
				char name[256];
				int len = strlen(ot_ui_name);

				/* display name for menu, can hold hotkey */
				BLI_strncpy(name, ot_ui_name, sizeof(name));

				/* check for hotkey */
				if (len < sizeof(name) - 6) {
					if (WM_key_event_operator_string(
					        C, ot->idname, WM_OP_EXEC_DEFAULT, NULL, true,
					        &name[len + 1], sizeof(name) - len - 1))
					{
						name[len] = UI_SEP_CHAR;
					}
				}

				if (false == UI_search_item_add(items, name, ot, 0))
					break;
			}
		}
	}
}

void UI_but_func_operator_search(uiBut *but)
{
	UI_but_func_search_set(
	        but, ui_searchbox_create_operator, operator_search_cb,
	        NULL, operator_call_cb, NULL);
}

void uiTemplateOperatorSearch(uiLayout *layout)
{
	uiBlock *block;
	uiBut *but;
	static char search[256] = "";

	block = uiLayoutGetBlock(layout);
	UI_block_layout_set_current(block, layout);

	but = uiDefSearchBut(block, search, 0, ICON_VIEWZOOM, sizeof(search), 0, 0, UI_UNIT_X * 6, UI_UNIT_Y, 0, 0, "");
	UI_but_func_operator_search(but);
}

/************************* Operator Redo Properties Template **************************/

#ifdef USE_OP_RESET_BUT
static void ui_layout_operator_buts__reset_cb(bContext *UNUSED(C), void *op_pt, void *UNUSED(arg_dummy2))
{
	WM_operator_properties_reset((wmOperator *)op_pt);
}
#endif

/**
 * Draw Operator property buttons for redoing execution with different settings.
 * This function does not initialize the layout, functions can be called on the layout before and after.
 */
eAutoPropButsReturn uiTemplateOperatorPropertyButs(
        const bContext *C, uiLayout *layout, wmOperator *op,
        bool (*check_prop)(struct PointerRNA *, struct PropertyRNA *),
        const eButLabelAlign label_align, const short flag)
{
	uiBlock *block = uiLayoutGetBlock(layout);
	eAutoPropButsReturn return_info = 0;

	if (!op->properties) {
		IDPropertyTemplate val = {0};
		op->properties = IDP_New(IDP_GROUP, &val, "wmOperatorProperties");
	}

	if (flag & UI_TEMPLATE_OP_PROPS_SHOW_TITLE) {
		uiItemL(layout, RNA_struct_ui_name(op->type->srna), ICON_NONE);
	}

	/* poll() on this operator may still fail, at the moment there is no nice feedback when this happens
	 * just fails silently */
	if (!WM_operator_repeat_check(C, op)) {
		UI_block_lock_set(block, true, "Operator can't' redo");

		/* XXX, could give some nicer feedback or not show redo panel at all? */
		uiItemL(layout, IFACE_("* Redo Unsupported *"), ICON_NONE);
	}
	else {
		/* useful for macros where only one of the steps can't be re-done */
		UI_block_lock_clear(block);
	}

	/* menu */
	if (op->type->flag & OPTYPE_PRESET) {
		/* XXX, no simple way to get WM_MT_operator_presets.bl_label from python! Label remains the same always! */
		PointerRNA op_ptr;
		uiLayout *row;

		block->ui_operator = op;

		row = uiLayoutRow(layout, true);
		uiItemM(row, "WM_MT_operator_presets", NULL, ICON_NONE);

		wmOperatorType *ot = WM_operatortype_find("WM_OT_operator_preset_add", false);
		uiItemFullO_ptr(row, ot, "", ICON_ZOOMIN, NULL, WM_OP_INVOKE_DEFAULT, 0, &op_ptr);
		RNA_string_set(&op_ptr, "operator", op->type->idname);

		uiItemFullO_ptr(row, ot, "", ICON_ZOOMOUT, NULL, WM_OP_INVOKE_DEFAULT, 0, &op_ptr);
		RNA_string_set(&op_ptr, "operator", op->type->idname);
		RNA_boolean_set(&op_ptr, "remove_active", true);
	}

	if (op->type->ui) {
		op->layout = layout;
		op->type->ui((bContext *)C, op);
		op->layout = NULL;

		/* UI_LAYOUT_OP_SHOW_EMPTY ignored. return_info is ignored too. We could
		 * allow ot.ui callback to return this, but not needed right now. */
	}
	else {
		wmWindowManager *wm = CTX_wm_manager(C);
		PointerRNA ptr;

		RNA_pointer_create(&wm->id, op->type->srna, op->properties, &ptr);

		uiLayoutSetPropSep(layout, true);

		/* main draw call */
		return_info = uiDefAutoButsRNA(layout, &ptr, check_prop, label_align, (flag & UI_TEMPLATE_OP_PROPS_COMPACT));

		if ((return_info & UI_PROP_BUTS_NONE_ADDED) && (flag & UI_TEMPLATE_OP_PROPS_SHOW_EMPTY)) {
			uiItemL(layout, IFACE_("No Properties"), ICON_NONE);
		}
	}

#ifdef USE_OP_RESET_BUT
	/* its possible that reset can do nothing if all have PROP_SKIP_SAVE enabled
	 * but this is not so important if this button is drawn in those cases
	 * (which isn't all that likely anyway) - campbell */
	if (op->properties->len) {
		uiBut *but;
		uiLayout *col; /* needed to avoid alignment errors with previous buttons */

		col = uiLayoutColumn(layout, false);
		block = uiLayoutGetBlock(col);
		but = uiDefIconTextBut(block, UI_BTYPE_BUT, 0, ICON_FILE_REFRESH, IFACE_("Reset"), 0, 0, UI_UNIT_X, UI_UNIT_Y,
		                       NULL, 0.0, 0.0, 0.0, 0.0, TIP_("Reset operator defaults"));
		UI_but_func_set(but, ui_layout_operator_buts__reset_cb, op, NULL);
	}
#endif

	/* set various special settings for buttons */

	/* Only do this if we're not refreshing an existing UI. */
	if (block->oldblock == NULL) {
		const bool is_popup = (block->flag & UI_BLOCK_KEEP_OPEN) != 0;
		uiBut *but;

		for (but = block->buttons.first; but; but = but->next) {
			/* no undo for buttons for operator redo panels */
			UI_but_flag_disable(but, UI_BUT_UNDO);

			/* only for popups, see [#36109] */

			/* if button is operator's default property, and a text-field, enable focus for it
			 *	- this is used for allowing operators with popups to rename stuff with fewer clicks
			 */
			if (is_popup) {
				if ((but->rnaprop == op->type->prop) && (but->type == UI_BTYPE_TEXT)) {
					UI_but_focus_on_enter_event(CTX_wm_window(C), but);
				}
			}
		}
	}

	return return_info;
}

/************************* Running Jobs Template **************************/

#define B_STOPRENDER    1
#define B_STOPCAST      2
#define B_STOPANIM      3
#define B_STOPCOMPO     4
#define B_STOPSEQ       5
#define B_STOPCLIP      6
#define B_STOPFILE      7
#define B_STOPOTHER     8

static void do_running_jobs(bContext *C, void *UNUSED(arg), int event)
{
	switch (event) {
		case B_STOPRENDER:
			G.is_break = true;
			break;
		case B_STOPCAST:
			WM_jobs_stop(CTX_wm_manager(C), CTX_wm_screen(C), NULL);
			break;
		case B_STOPANIM:
			WM_operator_name_call(C, "SCREEN_OT_animation_play", WM_OP_INVOKE_SCREEN, NULL);
			break;
		case B_STOPCOMPO:
			WM_jobs_stop(CTX_wm_manager(C), CTX_data_scene(C), NULL);
			break;
		case B_STOPSEQ:
			WM_jobs_stop(CTX_wm_manager(C), CTX_wm_area(C), NULL);
			break;
		case B_STOPCLIP:
			WM_jobs_stop(CTX_wm_manager(C), CTX_wm_area(C), NULL);
			break;
		case B_STOPFILE:
			WM_jobs_stop(CTX_wm_manager(C), CTX_wm_area(C), NULL);
			break;
		case B_STOPOTHER:
			G.is_break = true;
			break;
	}
}

struct ProgressTooltip_Store {
	wmWindowManager *wm;
	void *owner;
};

static char *progress_tooltip_func(bContext *UNUSED(C), void *argN, const char *UNUSED(tip))
{
	struct ProgressTooltip_Store *arg = argN;
	wmWindowManager *wm = arg->wm;
	void *owner = arg->owner;

	const float progress = WM_jobs_progress(wm, owner);

	/* create tooltip text and associate it with the job */
	char elapsed_str[32];
	char remaining_str[32] = "Unknown";
	const double elapsed = PIL_check_seconds_timer() - WM_jobs_starttime(wm, owner);
	BLI_timecode_string_from_time_simple(elapsed_str, sizeof(elapsed_str), elapsed);

	if (progress) {
		const double remaining = (elapsed / (double)progress) - elapsed;
		BLI_timecode_string_from_time_simple(remaining_str, sizeof(remaining_str), remaining);
	}

	return BLI_sprintfN(
	        "Time Remaining: %s\n"
	        "Time Elapsed: %s",
	        remaining_str, elapsed_str);
}

void uiTemplateRunningJobs(uiLayout *layout, bContext *C)
{
	bScreen *screen = CTX_wm_screen(C);
	wmWindowManager *wm = CTX_wm_manager(C);
	ScrArea *sa = CTX_wm_area(C);
	uiBlock *block;
	void *owner = NULL;
	int handle_event, icon = 0;

	block = uiLayoutGetBlock(layout);
	UI_block_layout_set_current(block, layout);

	UI_block_func_handle_set(block, do_running_jobs, NULL);

	if (sa->spacetype == SPACE_SEQ) {
		if (WM_jobs_test(wm, sa, WM_JOB_TYPE_ANY))
			owner = sa;
		handle_event = B_STOPSEQ;
		icon = ICON_SEQUENCE;
	}
	else if (sa->spacetype == SPACE_CLIP) {
		if (WM_jobs_test(wm, sa, WM_JOB_TYPE_ANY))
			owner = sa;
		handle_event = B_STOPCLIP;
		icon = ICON_CLIP;
	}
	else if (sa->spacetype == SPACE_FILE) {
		if (WM_jobs_test(wm, sa, WM_JOB_TYPE_FILESEL_READDIR)) {
			owner = sa;
		}
		handle_event = B_STOPFILE;
		icon = ICON_FILESEL;
	}
	else {
		Scene *scene;
		/* another scene can be rendering too, for example via compositor */
		for (scene = CTX_data_main(C)->scene.first; scene; scene = scene->id.next) {
			if (WM_jobs_test(wm, scene, WM_JOB_TYPE_RENDER)) {
				handle_event = B_STOPRENDER;
				icon = ICON_SCENE;
				break;
			}
			else if (WM_jobs_test(wm, scene, WM_JOB_TYPE_COMPOSITE)) {
				handle_event = B_STOPCOMPO;
				icon = ICON_RENDERLAYERS;
				break;
			}
			else if (WM_jobs_test(wm, scene, WM_JOB_TYPE_OBJECT_BAKE_TEXTURE) ||
			         WM_jobs_test(wm, scene, WM_JOB_TYPE_OBJECT_BAKE))
			{
				/* Skip bake jobs in compositor to avoid compo header displaying
				 * progress bar which is not being updated (bake jobs only need
				 * to update NC_IMAGE context.
				 */
				if (sa->spacetype != SPACE_NODE) {
					handle_event = B_STOPOTHER;
					icon = ICON_IMAGE_COL;
					break;
				}
			}
			else if (WM_jobs_test(wm, scene, WM_JOB_TYPE_DPAINT_BAKE)) {
				handle_event = B_STOPOTHER;
				icon = ICON_MOD_DYNAMICPAINT;
				break;
			}
			else if (WM_jobs_test(wm, scene, WM_JOB_TYPE_POINTCACHE)) {
				handle_event = B_STOPOTHER;
				icon = ICON_PHYSICS;
				break;
			}
			else if (WM_jobs_test(wm, scene, WM_JOB_TYPE_OBJECT_SIM_FLUID)) {
				handle_event = B_STOPOTHER;
				icon = ICON_MOD_FLUIDSIM;
				break;
			}
			else if (WM_jobs_test(wm, scene, WM_JOB_TYPE_OBJECT_SIM_OCEAN)) {
				handle_event = B_STOPOTHER;
				icon = ICON_MOD_OCEAN;
				break;
			}
			else if (WM_jobs_test(wm, scene, WM_JOB_TYPE_ANY)) {
				handle_event = B_STOPOTHER;
				icon = ICON_NONE;
				break;
			}
		}
		owner = scene;
	}

	if (owner) {
		const uiFontStyle *fstyle = UI_FSTYLE_WIDGET;
		bool active = !(G.is_break || WM_jobs_is_stopped(wm, owner));

		uiLayout *row = uiLayoutRow(layout, false);
		block = uiLayoutGetBlock(row);

		/* get percentage done and set it as the UI text */
		const float progress = WM_jobs_progress(wm, owner);
		char text[8];
		BLI_snprintf(text, 8, "%d%%", (int)(progress * 100));

		const char *name = active ? WM_jobs_name(wm, owner) : "Canceling...";

		/* job name and icon */
		const int textwidth = UI_fontstyle_string_width(fstyle, name);
		uiDefIconTextBut(block, UI_BTYPE_LABEL, 0, icon, name, 0, 0,
		                 textwidth + UI_UNIT_X * 1.5f, UI_UNIT_Y, NULL, 0.0f, 0.0f, 0.0f, 0.0f, "");

		/* stick progress bar and cancel button together */
		row = uiLayoutRow(layout, true);
		uiLayoutSetActive(row, active);
		block = uiLayoutGetBlock(row);

		{
			struct ProgressTooltip_Store *tip_arg = MEM_mallocN(sizeof(*tip_arg), __func__);
			tip_arg->wm = wm;
			tip_arg->owner = owner;
			uiBut *but_progress = uiDefIconTextBut(
			        block, UI_BTYPE_PROGRESS_BAR, 0, 0, text,
			        UI_UNIT_X, 0, UI_UNIT_X * 6.0f, UI_UNIT_Y, NULL, 0.0f, 0.0f,
			        progress, 0, NULL);
			UI_but_func_tooltip_set(but_progress, progress_tooltip_func, tip_arg);
		}

		uiDefIconTextBut(block, UI_BTYPE_BUT, handle_event, ICON_PANEL_CLOSE,
		                 "", 0, 0, UI_UNIT_X, UI_UNIT_Y,
		                 NULL, 0.0f, 0.0f, 0, 0, TIP_("Stop this job"));
	}

	if (screen->animtimer)
		uiDefIconTextBut(block, UI_BTYPE_BUT, B_STOPANIM, ICON_CANCEL, IFACE_("Anim Player"), 0, 0, UI_UNIT_X * 5.0f, UI_UNIT_Y,
		                 NULL, 0.0f, 0.0f, 0, 0, TIP_("Stop animation playback"));
}

/************************* Reports for Last Operator Template **************************/

void uiTemplateReportsBanner(uiLayout *layout, bContext *C)
{
	ReportList *reports = CTX_wm_reports(C);
	Report *report = BKE_reports_last_displayable(reports);
	ReportTimerInfo *rti;

	uiLayout *ui_abs;
	uiBlock *block;
	uiBut *but;
	uiStyle *style = UI_style_get();
	int width;
	int icon;

	/* if the report display has timed out, don't show */
	if (!reports->reporttimer) return;

	rti = (ReportTimerInfo *)reports->reporttimer->customdata;

	if (!rti || rti->widthfac == 0.0f || !report) return;

	ui_abs = uiLayoutAbsolute(layout, false);
	block = uiLayoutGetBlock(ui_abs);

	UI_fontstyle_set(&style->widgetlabel);
	width = BLF_width(style->widgetlabel.uifont_id, report->message, report->len);
	width = min_ii((int)(rti->widthfac * width), width);
	width = max_ii(width, 10);

	/* make a box around the report to make it stand out */
	UI_block_align_begin(block);
	but = uiDefBut(block, UI_BTYPE_ROUNDBOX, 0, "", 0, 0, UI_UNIT_X + 5, UI_UNIT_Y, NULL, 0.0f, 0.0f, 0, 0, "");
	/* set the report's bg color in but->col - UI_BTYPE_ROUNDBOX feature */
	rgb_float_to_uchar(but->col, rti->col);
	but->col[3] = 255;

	but = uiDefBut(block, UI_BTYPE_ROUNDBOX, 0, "", UI_UNIT_X + 5, 0, UI_UNIT_X + width, UI_UNIT_Y,
	               NULL, 0.0f, 0.0f, 0, 0, "");

	UI_block_align_end(block);

	UI_GetThemeColorShade3ubv(TH_BACK, 20, but->col);
	but->col[3] = 255;

	/* icon and report message on top */
	icon = UI_icon_from_report_type(report->type);

	/* XXX: temporary operator to dump all reports to a text block, but only if more than 1 report
	 * to be shown instead of icon when appropriate...
	 */
	UI_block_emboss_set(block, UI_EMBOSS_NONE);

	if (reports->list.first != reports->list.last)
		uiDefIconButO(block, UI_BTYPE_BUT, "UI_OT_reports_to_textblock", WM_OP_INVOKE_REGION_WIN, icon, 2, 0, UI_UNIT_X,
		              UI_UNIT_Y, TIP_("Click to see the remaining reports in text block: 'Recent Reports'"));
	else
		uiDefIconBut(block, UI_BTYPE_LABEL, 0, icon, 2, 0, UI_UNIT_X, UI_UNIT_Y, NULL, 0.0f, 0.0f, 0, 0, "");

	UI_block_emboss_set(block, UI_EMBOSS);

	uiDefBut(block, UI_BTYPE_LABEL, 0, report->message, UI_UNIT_X + 5, 0, UI_UNIT_X + width, UI_UNIT_Y,
	         NULL, 0.0f, 0.0f, 0, 0, "");
}


void uiTemplateInputStatus(uiLayout *layout, struct bContext *C)
{
	wmWindow *win = CTX_wm_window(C);
	WorkSpace *workspace = CTX_wm_workspace(C);

	/* Workspace status text has priority. */
	if (workspace->status_text) {
		uiItemL(layout, workspace->status_text, ICON_NONE);
		return;
	}

	/* Otherwise should cursor keymap status. */
	for (int i = 0; i < 3; i++) {
		uiLayout *box = uiLayoutRow(layout, false);
		uiLayout *col = uiLayoutColumn(box, false);
		uiLayout *row = uiLayoutRow(col, true);
		uiLayoutSetAlignment(row, UI_LAYOUT_ALIGN_LEFT);

		const char *msg = WM_window_cursor_keymap_status_get(win, i, 0);
		const char *msg_drag = WM_window_cursor_keymap_status_get(win, i, 1);

		uiItemL(row, msg ? msg : "", (ICON_MOUSE_LMB + i));

		if (msg_drag) {
			uiItemL(row, msg_drag, (ICON_MOUSE_LMB_DRAG + i));
		}

		/* Use trick with empty string to keep icons in same position. */
		row = uiLayoutRow(col, false);
		uiItemL(row, "                                                                   ", ICON_NONE);
	}
}

/********************************* Keymap *************************************/

static void keymap_item_modified(bContext *UNUSED(C), void *kmi_p, void *UNUSED(unused))
{
	wmKeyMapItem *kmi = (wmKeyMapItem *)kmi_p;
	WM_keyconfig_update_tag(NULL, kmi);
}

static void template_keymap_item_properties(uiLayout *layout, const char *title, PointerRNA *ptr)
{
	uiLayout *flow, *box, *row;

	uiItemS(layout);

	if (title)
		uiItemL(layout, title, ICON_NONE);

	flow = uiLayoutColumnFlow(layout, 2, false);

	RNA_STRUCT_BEGIN (ptr, prop)
	{
		const bool is_set = RNA_property_is_set(ptr, prop);
		uiBut *but;

		/* recurse for nested properties */
		if (RNA_property_type(prop) == PROP_POINTER) {
			PointerRNA propptr = RNA_property_pointer_get(ptr, prop);

			if (propptr.data && RNA_struct_is_a(propptr.type, &RNA_OperatorProperties)) {
				const char *name = RNA_property_ui_name(prop);
				template_keymap_item_properties(layout, name, &propptr);
				continue;
			}
		}

		box = uiLayoutBox(flow);
		uiLayoutSetActive(box, is_set);
		row = uiLayoutRow(box, false);

		/* property value */
		uiItemFullR(row, ptr, prop, -1, 0, 0, NULL, ICON_NONE);

		if (is_set) {
			/* unset operator */
			uiBlock *block = uiLayoutGetBlock(row);
			UI_block_emboss_set(block, UI_EMBOSS_NONE);
			but = uiDefIconButO(block, UI_BTYPE_BUT, "UI_OT_unset_property_button", WM_OP_EXEC_DEFAULT, ICON_X, 0, 0, UI_UNIT_X, UI_UNIT_Y, NULL);
			but->rnapoin = *ptr;
			but->rnaprop = prop;
			UI_block_emboss_set(block, UI_EMBOSS);
		}
	}
	RNA_STRUCT_END;
}

void uiTemplateKeymapItemProperties(uiLayout *layout, PointerRNA *ptr)
{
	PointerRNA propptr = RNA_pointer_get(ptr, "properties");

	if (propptr.data) {
		uiBut *but = uiLayoutGetBlock(layout)->buttons.last;

		WM_operator_properties_sanitize(&propptr, false);
		template_keymap_item_properties(layout, NULL, &propptr);

		/* attach callbacks to compensate for missing properties update,
		 * we don't know which keymap (item) is being modified there */
		for (; but; but = but->next) {
			/* operator buttons may store props for use (file selector, [#36492]) */
			if (but->rnaprop) {
				UI_but_func_set(but, keymap_item_modified, ptr->data, NULL);

				/* Otherwise the keymap will be re-generated which we're trying to edit, see: T47685 */
				UI_but_flag_enable(but, UI_BUT_UPDATE_DELAY);
			}
		}
	}
}

/********************************* Color management *************************************/

void uiTemplateColorspaceSettings(uiLayout *layout, PointerRNA *ptr, const char *propname)
{
	PropertyRNA *prop;
	PointerRNA colorspace_settings_ptr;

	prop = RNA_struct_find_property(ptr, propname);

	if (!prop) {
		printf("%s: property not found: %s.%s\n",
		       __func__, RNA_struct_identifier(ptr->type), propname);
		return;
	}

	colorspace_settings_ptr = RNA_property_pointer_get(ptr, prop);

	uiItemR(layout, &colorspace_settings_ptr, "name", 0, IFACE_("Color Space"), ICON_NONE);
}

void uiTemplateColormanagedViewSettings(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr, const char *propname)
{
	PropertyRNA *prop;
	PointerRNA view_transform_ptr;
	uiLayout *col, *row;
	ColorManagedViewSettings *view_settings;

	prop = RNA_struct_find_property(ptr, propname);

	if (!prop) {
		printf("%s: property not found: %s.%s\n",
		       __func__, RNA_struct_identifier(ptr->type), propname);
		return;
	}

	view_transform_ptr = RNA_property_pointer_get(ptr, prop);
	view_settings = view_transform_ptr.data;

	col = uiLayoutColumn(layout, false);

	row = uiLayoutRow(col, false);
	uiItemR(row, &view_transform_ptr, "view_transform", 0, IFACE_("View"), ICON_NONE);

	col = uiLayoutColumn(layout, false);
	uiItemR(col, &view_transform_ptr, "exposure", 0, NULL, ICON_NONE);
	uiItemR(col, &view_transform_ptr, "gamma", 0, NULL, ICON_NONE);

	uiItemR(col, &view_transform_ptr, "look", 0, IFACE_("Look"), ICON_NONE);

	col = uiLayoutColumn(layout, false);
	uiItemR(col, &view_transform_ptr, "use_curve_mapping", 0, NULL, ICON_NONE);
	if (view_settings->flag & COLORMANAGE_VIEW_USE_CURVES)
		uiTemplateCurveMapping(col, &view_transform_ptr, "curve_mapping", 'c', true, false, false);
}

/********************************* Component Menu *************************************/

typedef struct ComponentMenuArgs {
	PointerRNA ptr;
	char propname[64];	/* XXX arbitrary */
} ComponentMenuArgs;
/* NOTE: this is a block-menu, needs 0 events, otherwise the menu closes */
static uiBlock *component_menu(bContext *C, ARegion *ar, void *args_v)
{
	ComponentMenuArgs *args = (ComponentMenuArgs *)args_v;
	uiBlock *block;
	uiLayout *layout;

	block = UI_block_begin(C, ar, __func__, UI_EMBOSS);
	UI_block_flag_enable(block, UI_BLOCK_KEEP_OPEN);

	layout = uiLayoutColumn(UI_block_layout(block, UI_LAYOUT_VERTICAL, UI_LAYOUT_PANEL, 0, 0, UI_UNIT_X * 6, UI_UNIT_Y, 0, UI_style_get()), 0);

	uiItemR(layout, &args->ptr, args->propname, UI_ITEM_R_EXPAND, "", ICON_NONE);

	UI_block_bounds_set_normal(block, 6);
	UI_block_direction_set(block, UI_DIR_DOWN);

	return block;
}
void uiTemplateComponentMenu(uiLayout *layout, PointerRNA *ptr, const char *propname, const char *name)
{
	ComponentMenuArgs *args = MEM_callocN(sizeof(ComponentMenuArgs), "component menu template args");
	uiBlock *block;
	uiBut *but;

	args->ptr = *ptr;
	BLI_strncpy(args->propname, propname, sizeof(args->propname));

	block = uiLayoutGetBlock(layout);
	UI_block_align_begin(block);

	but = uiDefBlockButN(block, component_menu, args, name, 0, 0, UI_UNIT_X * 6, UI_UNIT_Y, "");
	/* set rna directly, uiDefBlockButN doesn't do this */
	but->rnapoin = *ptr;
	but->rnaprop = RNA_struct_find_property(ptr, propname);
	but->rnaindex = 0;

	UI_block_align_end(block);
}

/************************* Node Socket Icon **************************/

void uiTemplateNodeSocket(uiLayout *layout, bContext *UNUSED(C), float *color)
{
	uiBlock *block;
	uiBut *but;

	block = uiLayoutGetBlock(layout);
	UI_block_align_begin(block);

	/* XXX using explicit socket colors is not quite ideal.
	 * Eventually it should be possible to use theme colors for this purpose,
	 * but this requires a better design for extendable color palettes in user prefs.
	 */
	but = uiDefBut(block, UI_BTYPE_NODE_SOCKET, 0, "", 0, 0, UI_UNIT_X, UI_UNIT_Y, NULL, 0, 0, 0, 0, "");
	rgba_float_to_uchar(but->col, color);

	UI_block_align_end(block);
}

/********************************* Cache File *********************************/

void uiTemplateCacheFile(uiLayout *layout, bContext *C, PointerRNA *ptr, const char *propname)
{
	if (!ptr->data) {
		return;
	}

	PropertyRNA *prop = RNA_struct_find_property(ptr, propname);

	if (!prop) {
		printf("%s: property not found: %s.%s\n",
		       __func__, RNA_struct_identifier(ptr->type), propname);
		return;
	}

	if (RNA_property_type(prop) != PROP_POINTER) {
		printf("%s: expected pointer property for %s.%s\n",
		       __func__, RNA_struct_identifier(ptr->type), propname);
		return;
	}

	PointerRNA fileptr = RNA_property_pointer_get(ptr, prop);
	CacheFile *file = fileptr.data;

	uiLayoutSetContextPointer(layout, "edit_cachefile", &fileptr);

	uiTemplateID(layout, C, ptr, propname, NULL, "CACHEFILE_OT_open", NULL, UI_TEMPLATE_ID_FILTER_ALL);

	if (!file) {
		return;
	}

	SpaceButs *sbuts = CTX_wm_space_buts(C);

	uiLayout *row = uiLayoutRow(layout, false);
	uiBlock *block = uiLayoutGetBlock(row);
	uiDefBut(block, UI_BTYPE_LABEL, 0, IFACE_("File Path:"), 0, 19, 145, 19, NULL, 0, 0, 0, 0, "");

	row = uiLayoutRow(layout, false);
	uiLayout *split = uiLayoutSplit(row, 0.0f, false);
	row = uiLayoutRow(split, true);

	uiItemR(row, &fileptr, "filepath", 0, "", ICON_NONE);
	uiItemO(row, "", ICON_FILE_REFRESH, "cachefile.reload");

	row = uiLayoutRow(layout, false);
	uiItemR(row, &fileptr, "is_sequence", 0, "Is Sequence", ICON_NONE);

	row = uiLayoutRow(layout, false);
	uiItemR(row, &fileptr, "override_frame", 0, "Override Frame", ICON_NONE);

	row = uiLayoutRow(layout, false);
	uiLayoutSetEnabled(row, RNA_boolean_get(&fileptr, "override_frame"));
	uiItemR(row, &fileptr, "frame", 0, "Frame", ICON_NONE);

	row = uiLayoutRow(layout, false);
	uiItemR(row, &fileptr, "frame_offset", 0, "Frame Offset", ICON_NONE);

	row = uiLayoutRow(layout, false);
	uiItemL(row, IFACE_("Manual Transform:"), ICON_NONE);

	row = uiLayoutRow(layout, false);
	uiLayoutSetEnabled(row, (sbuts->mainb == BCONTEXT_CONSTRAINT));
	uiItemR(row, &fileptr, "scale", 0, "Scale", ICON_NONE);

	/* TODO: unused for now, so no need to expose. */
#if 0
	row = uiLayoutRow(layout, false);
	uiItemR(row, &fileptr, "forward_axis", 0, "Forward Axis", ICON_NONE);

	row = uiLayoutRow(layout, false);
	uiItemR(row, &fileptr, "up_axis", 0, "Up Axis", ICON_NONE);
#endif
}